Webster's Dictionary, 1913

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Eternal adjective [ French éternel , Latin aeternalis , from aeternus . See Etern .]
1. Without beginning or end of existence; always existing.

The eternal God is thy refuge.
Deut. xxxiii. 27.

To know wether there were any real being, whose duration has been eternal .
Locke.

2. Without end of existence or duration; everlasting; endless; immortal.

That they may also obtain the salvation which is in Christ Jesus, with eternal glory.
2 Tim. ii. 10.

3. Continued without intermission; perpetual; ceaseless; constant.

And fires eternal in thy temple shine.
Dryden.

4. Existing at all times without change; immutable.

Hobbes believed the eternal truths which he opposed.
Dryden.

What are the eternal objects of poetry among all nations, and at all times?
M. Arnold.

5. Exceedingly great or bad; -- used as a strong intensive. "Some eternal villain."

The Eternal City , an appellation of Rome.

Syn. -- Everlasting; endless; infinite; ceaseless; perpetual; interminable. See Everlasting .

Eternal noun
1. One of the appellations of God.

Law whereby the Eternal himself doth work.
Hooker.

2. That which is endless and immortal. Young.

Eternalist noun One who holds the existence of matter to be from eternity. T. Burnet.

Eternalize transitive verb To make eternal. Shelton.

Eternally adverb In an eternal manner.

That which is morally good or evil at any time or in any case, must be also eternally and unchangeably so.
South.

Where western gales eternally reside.
Addison.

Eterne adjective See Etern .

Eternify transitive verb To make eternal. [ Obsolete]

Fame . . . eternifies the name.
Mir. for Mag.

Eternity noun ; plural Eternities . [ French éternité , Latin aeternitas , from aeternus . See Etern .]
1. Infinite duration, without beginning in the past or end in the future; also, duration without end in the future; endless time.

The high and lofty One, that inhabiteth eternity .
Is. lvii. 15.

2. Condition which begins at death; immortality.

Thou know'st 't is common; all that lives must die,
Passing through nature to eternity .
Shak.

Eternization noun The act of eternizing; the act of rendering immortal or famous.

Eternize transitive verb [ imperfect & past participle Eternized ; present participle & verbal noun Eterniziing .] [ Confer French éterniser .]
1. To make eternal or endless.

This other [ gift] served but to eternize woe.
Milton.

2. To make forever famous; to immortalize; as, to eternize one's self, a name, exploits.

St. Alban's battle won by famous York,
Shall be eternized in all age to come.
Shak.

Etesian adjective [ Latin etesiae , plural, periodic winds, Greek ..., from ... year: confer French étésien .] Periodical; annual; -- applied to winds which annually blow from the north over the Mediterranean, esp. the eastern part, for an irregular period during July and August.

Ethal noun [ Eth er + al cohol: confer French éthal .] (Chemistry) A white waxy solid, C 16 H 33 .OH; -- called also cetylic alcohol . See Cetylic alcohol , under Cetylic .

Ethane noun [ From Ether .] (Chemistry) A gaseous hydrocarbon, C 2 H 6 , forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl .

Ethe adjective [ See Eath .] Easy. [ Obsolete] Spenser.

Ethel adjective [ Anglo-Saxon e...ele , æ...ele . See Atheling .] Noble. [ Obsolete]

Ethene noun (Chemistry) Ethylene; olefiant gas.

Ethenic adjective (Chemistry) Pertaining to, derived from. or resembling, ethene or ethylene; as, ethenic ether.

Ethenyl noun [ Ethene + - yl .] (Chemistry) (a) A trivalent hydrocarbon radical, CH 3 .C. (b) A univalent hydrocarbon radical of the ethylene series, CH 2 :CH; -- called also vinyl . See Vinyl .

Etheostomoid adjective [ New Latin etheostoma name of a genus + -oid .] (Zoology) Pertaining to, or like, the genus Etheostoma . -- noun Any fish of the genus Etheostoma and related genera, allied to the perches; -- also called darter . The etheostomoids are small and often bright-colored fishes inhabiting the fresh waters of North America. About seventy species are known. See Darter .

Ether (ē"thẽr) noun [ Latin aether , Greek a'iqh`r , from a'i`qein to light up, kindle, burn, blaze; akin to Sanskrit idh , indh , and probably to English idle : confer French éther .] [ Written also æther .]
1. (Physics) A medium of great elasticity and extreme tenuity, supposed to pervade all space, the interior of solid bodies not excepted, and to be the medium of transmission of light and heat; hence often called luminiferous ether .

2. Supposed matter above the air; the air itself.

3. (Chemistry) (a) A light, volatile, mobile, inflammable liquid, (C 2 H 5 ) 2 O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether . It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anæsthetic. Called also ethyl oxide . (b) Any similar oxide of hydrocarbon radicals; as, amyl ether ; valeric ether .

Complex ether , Mixed ether (Chemistry) , an oxide of two different radicals in the same molecule; as, ethyl methyl ether, C 2 H 5 .O.CH 3 . -- Compound ether (Chemistry) , an ethereal salt or a salt of some hydrocarbon as the base; an ester. -- Ether engine (Machinery) , a condensing engine like a steam engine, but operated by the vapor of ether instead of by steam.

Ethereal adjective
1. Pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; as, ethereal space; ethereal regions.

Go, heavenly guest, ethereal messenger.
Milton.

2. Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc.

Vast chain of being, which from God began,
Natures ethereal , human, angel, man.
Pope.

3. (Chemistry) Pertaining to, derived from, or resembling, ether; as, ethereal salts.

Ethereal oil . (Chemistry) See Essential oil , under Essential . -- Ethereal oil of wine (Chemistry) , a heavy, yellow, oily liquid consisting essentially of etherin, etherol, and ethyl sulphate. It is the oily residuum left after etherification. Called also heavy oil of wine (distinguished from oil of wine , or œnanthic ether). -- Ethereal salt (Chemistry) , a salt of some organic radical as a base; an ester.

Etherealism noun Ethereality.

Ethereality noun The state of being ethereal; etherealness.

Something of that ethereality of thought and manner which belonged to Wordsworth's earlier lyrics.
J. C. Shairp.

Etherealization noun An ethereal or spiritlike state. J. H. Stirling.

Etherealize transitive verb
1. To convert into ether, or into subtile fluid; to saturate with ether.

2. To render ethereal or spiritlike.

Etherealized , moreover, by spiritual communications with the other world.
Hawthorne.

Ethereally adverb In an ethereal manner.

Etherealness noun Ethereality.

Ethereous adjective [ Latin aethereus , Greek ... See Ether .]
1. Formed of ether; ethereal. [ Obsolete]

This ethereous mold whereon we stand.
Milton.

2. (Chemistry) Pertaining to, or resembling, ether.

Ethereous oil . See Ethereal oil , under Ethereal .

Etherification noun (Chemistry) The act or process of making ether; specifically, the process by which a large quantity of alcohol is transformed into ether by the agency of a small amount of sulphuric, or ethyl sulphuric, acid.

Etheriform adjective [ Ether + form .] Having the form of ether.

Etherin noun (Chemistry) A white, crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether; -- formerly called also concrete oil of wine .

Etherization noun (Medicine) (a) The administration of ether to produce insensibility. (b) The state of the system under the influence of ether.

Etherize transitive verb [ imperfect & past participle Etherized ; present participle & verbal noun Etherizing .] [ Confer French éthériser .]
1. To convert into ether.

2. To render insensible by means of ether, as by inhalation; as, to etherize a patient.

Etherol noun [ Ether + Latin ol eum oil.] (Chemistry) An oily hydrocarbon regarded as a polymeric variety of ethylene, produced with etherin.

Ethic, Ethical adjective [ Latin ethicus , Greek ..., from ... custom, usage, character, dwelling; akin to ... custom, Goth. sidus , German sitte , Sanskrit svadh... , probably orig., one's own doing; sva self + dh... to set: confer French éthique . See So , Do .] Of, or belonging to, morals; treating of the moral feelings or duties; containing percepts of morality; moral; as, ethic discourses or epistles; an ethical system; ethical philosophy.

The ethical meaning of the miracles.
Trench.

Ethical dative (Gram.) , a use of the dative of a pronoun to signify that the person or thing spoken of is regarded with interest by some one; as, Quid mihi Celsus agit? How does my friend Celsus do?

Ethically adverb According to, in harmony with, moral principles or character.

Ethicist noun One who is versed in ethics, or has written on ethics.

Ethics noun [ Confer French éthique . See Ethic .] The science of human duty; the body of rules of duty drawn from this science; a particular system of principles and rules concerting duty, whether true or false; rules of practice in respect to a single class of human actions; as, political or social ethics ; medical ethics .

The completeness and consistency of its morality is the peculiar praise of the ethics which the Bible has taught.
I. Taylor.

Ethide noun (Chemistry) Any compound of ethyl of a binary type; as, potassium ethide .

Ethidene noun [ From Ether .] (Chemistry) Ethylidene. [ Obsolete]

Ethine noun (Chemistry) Acetylene.

Ethionic adjective [ Eth yl + thionic .] (Chemistry) Pertaining to, derived from, or designating, an acid so called.

Ethionic acid (Chemistry) , a liquid derivative of ethylsulphuric and sulphuric (thionic) acids, obtained by the action of sulphur trioxide on absolute alcohol.

Ethiop, Ethiopian noun [ Latin Aethiops , Greek ...; ... to burn + ... face.] A native or inhabitant of Ethiopia; also, in a general sense, a negro or black man.

Ethiopian, Ethiopic adjective Of or relating to Ethiopia or the Ethiopians.

Ethiopic noun The language of ancient Ethiopia; the language of the ancient Abyssinian empire (in Ethiopia), now used only in the Abyssinian church. It is of Semitic origin, and is also called Geez .

Ethiops noun [ New Latin See Ethiop .] (Old Chem.) A black substance; -- formerly applied to various preparations of a black or very dark color. [ Written also Æthiops .] [ Obsolete]

Ethiops martial (Old Chem.) , black oxide of iron. -- Ethiops mineral (Old Chem.) , black sulphide of mercury, obtained by triturating mercury with sulphur. -- Ethiops per se (Old Chem.) , mercury in finely divided state, having the appearance of a dark powder, obtained by shaking it up or by exposure to the air.

Ethmoid noun (Anat.) The ethmoid bone.

Ethmoid, Ethmoidal adjective [ Greek ... like a sieve; ... sieve + ... from: confer French ethmoïde , ethmoïdal .] (Anat.) (a) Like a sieve; cribriform. (b) Pertaining to, or in the region of, the ethmoid bone.

Ethmoid bone (Anat.) , a bone of complicated structure through which the olfactory nerves pass out of the cranium and over which they are largely distributed.

Ethmotrubinal adjective [ Ethm oid + turbinal .] See Turbinal . - - noun An ethmoturbinal bone.

Ethmovomerine noun [ Ethm oid + vomerine .] (Anat.) Pertaining to the region of the vomer and the base of the ethmoid in the skull.

Ethmovomerine plate (Anat.) , a cartilaginous plate beneath the front of the fetal brain which the ethmoid region of the skull is developed.