Webster's Dictionary, 1913

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Exosmosis noun [ New Latin See Exo- , and Osmose .] (Physics) See Exosmose .

Exosmotic adjective Pertaining to exosmose.

Exospore noun [ Exo + spore .] (Biol.) The extreme outer wall of a spore; the epispore.

Exossate transitive verb [ Latin exossatus , past participle of exossare to bone , from exos without bones; ex out + os , ossis , bone.] To deprive of bones; to take out the bones of; to bone. [ Obsolete] Bailey.

Exossation noun A depriving of bone or of fruit stones. [ Obsolete] Bacon.

Exosseous adjective [ Ex + osseous .] Boneless. " Exosseous animals. " Sir T. Browne.

Exostome noun [ Exo- + Greek ... mouth: confer French exostome .] (Botany) The small aperture or foremen in the outer coat of the ovule of a plant.

Exostosis noun [ New Latin , from Greek ...; ... out + ... bone: confer French exostose .]
1. (Medicine) Any protuberance of a bone which is not natural; an excrescence or morbid enlargement of a bone. Coxe.

2. (Botany) A knot formed upon or in the wood of trees by disease.

Exoteric, Exoterical adjective [ Latin exotericus , Greek ... from ... out: confer French exotérique . See Ex -] External; public; suitable to be imparted to the public; hence, capable of being readily or fully comprehended; -- opposed to esoteric , or secret.

The foppery of an exoteric and esoteric doctrine.
De Quincey.

Exoterics noun plural (Philos.) The public lectures or published writings of Aristotle. See Esoterics .

Exotery noun ; plural Exoteries (-...). That which is obvious, public, or common.

Dealing out exoteries only to the vulgar.
A. Tucker.

Exotheca noun [ Nl., from Greek 'e`xw outside + ... a case, box.] (Zoology) The tissue which fills the interspaces between the costæ of many madreporarian corals, usually consisting of small transverse or oblique septa.

Exothecium noun [ New Latin See Exotheca .] (Botany) The outer coat of the anther.

Exothermic adjective [ Prefix exo- + thermic .] (Chemistry) Characterized by, or formed with, evolution of heat; as, an exothermic reaction; -- opposed to endothermic .

Exotic adjective [ Latin exoticus , Greek ... from 'e`xw outside: confer French exotique . See Exoteric .] Introduced from a foreign country; not native; extraneous; foreign; as, an exotic plant; an exotic term or word.

Nothing was so splendid and exotic as the ambassador.
Evelyn.

Exotic noun Anything of foreign origin; something not of native growth, as a plant, a word, a custom.

Plants that are unknown to Italy, and such as the gardeners call exotics .
Addison.

Exotical adjective Foreign; not native; exotic. [ R.] -- Ex*ot"ic*al*ness , noun

Exoticism noun The state of being exotic; also, anything foreign, as a word or idiom; an exotic.

Expand transitive verb [ imperfect & past participle Expanded ; present participle & verbal noun Expanding .] [ Latin expandere , expansum ; ex out + pandere to spread out, to throw open; perhaps akin to English patent . Confer Spawn .]
1. To lay open by extending; to open wide; to spread out; to diffuse; as, a flower expands its leaves.

Then with expanded wings he steers his flight.
Milton.

2. To cause the particles or parts of to spread themselves or stand apart, thus increasing bulk without addition of substance; to make to occupy more space; to dilate; to distend; to extend every way; to enlarge; -- opposed to contract ; as, to expand the chest; heat expands all bodies; to expand the sphere of benevolence.

3. (Math.) To state in enlarged form; to develop; as, to expand an equation. See Expansion , 5.

Expand intransitive verb To become widely opened, spread apart, dilated, distended, or enlarged; as, flowers expand in the spring; metals expand by heat; the heart expands with joy. Dryden.

Expander noun Anything which causes expansion esp. (Mech.) a tool for stretching open or expanding a tube, etc.

Expanding adjective That expands, or may be expanded; extending; spreading; enlarging.

Expanding bit , Expanding drill (Mech.) , a bit or drill made adjustable for holes of various sizes; one which can be expanded in diameter while boring. -- Expanding pulley (Machinery) , a pulley so made, as in sections, that its diameter can be increased or diminished.

Expanse noun [ From Latin expansus , past participle of expandere . See Expand .] That which is expanded or spread out; a wide extent of space or body; especially, the arch of the sky. "The green expanse ." Savage.

Lights . . . high in the expanse of heaven.
Milton.

The smooth expanse of crystal lakes.
Pope.

Expanse transitive verb To expand. [ Obsolete]

That lies expansed unto the eyes of all.
Sir. T. Browne.

Expansibility noun The capacity of being expanded; as, the expansibility of air.

Expansible adjective [ Confer French expansible .] Capable of being expanded or spread out widely.

Bodies are not expansible in proportion to their weight.
Grew.

-- Ex*pan"si*ble*ness , noun - Ex*pan"si*bly , adverb

Expansile adjective Expansible.

Ether and alcohol are more expansile than water.
Brande & C.

Expansion noun [ Latin expansio : confer French expansion .]
1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement.

2. That which is expanded; expanse; extend surface; as, the expansion of a sheet or of a lake; the expansion was formed of metal.

The starred expansion of the skies.
Beattie.

3. Space through which anything is expanded; also, pure space.

Lost in expansion , void and infinite.
Blackmore.

4. (Com.) Enlargement or extension of business transactions; esp., increase of the circulation of bank notes.

5. (Math.) The developed result of an indicated operation; as, the expansion of (a + b) 2 is a 2 + 2ab + b 2 .

6. (Steam Engine) The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston.

7. (Nav. Arch.) The enlargement of the ship mathematically from a model or drawing to the full or building size, in the process of construction. Ham. Nav. Encyc.

» Expansion is also used adjectively, as in expansion joint, expansion gear, etc.

Expansion curve , a curve the coördinates of which show the relation between the pressure and volume of expanding gas or vapor; esp. (Steam engine) , that part of an indicator diagram which shows the declining pressure of the steam as it expands in the cylinder. -- Expansion gear (Steam Engine) . a cut-off gear. See Illust. of Link motion . -- Automatic expansion gear or cut-off , one that is regulated by the governor, and varies the supply of steam to the engine with the demand for power. -- Fixed expansion gear , or Fixed cut-off , one that always operates at the same fixed point of the stroke. -- Expansion joint , or Expansion coupling (Mech. & Engin.) , a yielding joint or coupling for so uniting parts of a machine or structure that expansion, as by heat, is prevented from causing injurious strains; as: (a) A slide or set of rollers, at the end of bridge truss, to support it but allow end play. (b) A telescopic joint in a steam pipe, to permit one part of the pipe to slide within the other. (c) A clamp for holding a locomotive frame to the boiler while allowing lengthwise motion. -- Expansion valve (Steam Engine) , a cut-off valve, to shut off steam from the cylinder before the end of each stroke.

Expansive (ĕks*păn"sĭv) adjective [ Confer French expansif .] Having a capacity or tendency to expand or dilate; diffusive; of much expanse; wide- extending; as, the expansive force of heat; the expansive quality of air.

A more expansive and generous compassion.
Eustace.

His forehead was broad and expansive .
Prescott.

-- Ex*pan"sive*ly , adverb - Ex*pan"sive*ness , noun

Expansure noun Expanse. [ Obsolete] "Night's rich expansure ."

Expatiate intransitive verb [ imperfect & past participle Expatiated ; present participle & verbal noun Expariating .] [ Latin expatiatus , exspatiatus , past participle of expatiari , exspatiari , to expatiate; ex out + spatiari to walk about spread out, from spatium space. See Space .]
1. To range at large, or without restraint.

Bids his free soul expatiate in the skies.
Pope.

2. To enlarge in discourse or writing; to be copious in argument or discussion; to descant.

He expatiated on the inconveniences of trade.
Addison.

Expatiate transitive verb To expand; to spread; to extend; to diffuse; to broaden.

Afford art an ample field in which to expatiate itself.
Dryden.

Expatiation noun Act of expatiating.

Expatiatory adjective Expansive; diffusive. [ R.]

Expatriate transitive verb [ imperfect & past participle Expatriated ; present participle & verbal noun Expatriating .] [ Late Latin expatriatus , past participle of expatriare ; Latin ex out + patria fatherland, native land, from pater father. See Patriot .]
1. To banish; to drive or force (a person) from his own country; to make an exile of.

The expatriated landed interest of France.
Burke.

2. Reflexively, as To expatriate one's self : To withdraw from one's native country; to renounce the rights and liabilities of citizenship where one is born, and become a citizen of another country.

Expatriation noun [ Confer French expatriation .] The act of banishing, or the state of banishment; especially, the forsaking of one's own country with a renunciation of allegiance.

Expatriation was a heavy ransom to pay for the rights of their minds and souls.
Palfrey.

Expect transitive verb [ imperfect & past participle Expected ; present participle & verbal noun Expecting .] [ Latin expectatum , to look out for, await, expect; ex + out spectare to look at. See Spectacle .]
1. To wait for; to await. [ Obsolete]

Let's in, and there expect their coming.
Shak.

2. To look for (mentally); to look forward to, as to something that is believed to be about to happen or come; to have a previous apprehension of, whether of good or evil; to look for with some confidence; to anticipate; -- often followed by an infinitive, sometimes by a clause (with, or without, that ); as, I expect to receive wages; I expect that the troops will be defeated. "Good: I will expect you." Shak. " Expecting thy reply." Shak.

The Somersetshire or yellow regiment . . . was expected to arrive on the following day.
Macaulay.

Syn. -- To anticipate; look for; await; hope. -- To Expect , Think , Believe , Await . Expect is a mental act and has aways a reference to the future, to some coming event; as a person expects to die, or he expects to survive. Think and believe have reference to the past and present, as well as to the future; as I think the mail has arrived; I believe he came home yesterday, that he is he is at home now. There is a not uncommon use of expect , which is a confusion of the two; as, I expect the mail has arrived; I expect he is at home. This misuse should be avoided. Await is a physical or moral act. We await that which, when it comes, will affect us personally. We expect what may, or may not, interest us personally. See Anticipate .

Expect transitive verb To wait; to stay. [ Obsolete] Sandys.

Expect noun Expectation. [ Obsolete] Shak.

Expectable adjective [ Latin expectabilis .] That may be expected or looked for. Sir T. Browne.

Expectance, Expectancy noun
1. The act of expecting ; expectation. Milton.

2. That which is expected, or looked or waited for with interest; the object of expectation or hope.

The expectancy and rose of the fair state.
Shak.

Estate in expectancy (Law) , one the possession of which a person is entitled to have at some future time, either as a remainder or reversion, or on the death of some one. Burrill.

Expectant adjective [ Latin expectans , exspectans , present participle of expectare , exspectare : confer French expectant .] Waiting in expectation; looking for ; (Medicine) waiting for the efforts of nature, with little active treatment.

Expectant estate (Law) , an estate in expectancy. See under Expectancy .

Expectant noun One who waits in expectation; one held in dependence by hope of receiving some good.

An expectant of future glory.
South.

Those who had employments, or were expectants .
Swift.

Expectation noun [ Latin expectio . exspectio : confer French expectation .]
1. The act or state of expecting or looking forward to an event as about to happen. "In expectation of a guest." Tennyson.

My soul, wait thou only upon God, for my expectation is from him.
Ps. lxii. 5.

2. That which is expected or looked for.

Why our great expectation should be called
The seed of woman.
Milton.

3. The prospect of the future; grounds upon which something excellent is expected to happen; prospect of anything good to come, esp. of property or rank.

His magnificent expectations made him, in the opinion of the world, the best match in Europe.
Prescott.

By all men's eyes a youth of expectation .
Otway.

4. The value of any chance (as the prospect of prize or property) which depends upon some contingent event. Expectations are computed for or against the occurrence of the event.

5. (Medicine) The leaving of the disease principally to the efforts of nature to effect a cure.

Expectation of life , the mean or average duration of the life individuals after any specified age.

Syn. -- Anticipation; confidence; trust.

Expectative adjective [ Confer French expectatif .] Constituting an object of expectation; contingent.

Expectative grace , a mandate given by the pope or a prince appointing a successor to any benefice before it becomes vacant. Foxe.

Expectative noun [ French expectative , from expectatif expectant.] Something in expectation; esp., an expectative grace. Milman.

Expectedly adverb In conformity with expectation. [ R.] Walpole.

Expecter noun One who expects.

Expectingly adverb In a state of expectation.

Expective adjective Expectative. [ R.] Shipley.