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Webster's Revised Unabridged Dictionary (1913, 100,000 entries)

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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Webster > Letter D > Page 43 of 135.
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Derivably De·riv"a·bly adverb By derivation.

Derival De·riv"al noun Derivation. [ R.]

The derival of e from a .

Earle.

Derivate Der"i·vate adjective [ Latin derivatus , past participle of derivare . See Derive .] Derived; derivative. [ R.] H. Taylor. -- noun A thing derived; a derivative. [ R.]

Derivate Der"i·vate transitive verb To derive. [ Obsolete] Huloet.

Derivation Der`i·va"tion noun [ Latin derivatio : confer French dérivation . See Derive .] 1. A leading or drawing off of water from a stream or source. [ Obsolete] T. Burnet. 2. The act of receiving anything from a source; the act of procuring an effect from a cause, means, or condition, as profits from capital, conclusions or opinions from evidence.

As touching traditional communication, . . . I do not doubt but many of those truths have had the help of that derivation .

Sir M. Hale. 3. The act of tracing origin or descent, as in grammar or genealogy; as, the derivation of a word from an Aryan root. 4. The state or method of being derived; the relation of origin when established or asserted. 5. That from which a thing is derived. 6. That which is derived; a derivative; a deduction.

From the Euphrates into an artificial derivation of that river.

Gibbon. 7. (Math.) The operation of deducing one function from another according to some fixed law, called the law of derivation , as the operation of differentiation or of integration. 8. (Medicine) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.

Derivation Der`iva"tion noun The formation of a word from its more original or radical elements; also, a statement of the origin and history of a word.

Derivational Der`i·va"tion·al adjective Relating to derivation. Earle.

Derivative De·riv"a·tive adjective [ Latin derivativus : confer French dérivatif .] Obtained by derivation; derived; not radical, original, or fundamental; originating, deduced, or formed from something else; secondary; as, a derivative conveyance; a derivative word. Derivative circulation , a modification of the circulation found in some parts of the body, in which the arteries empty directly into the veins without the interposition of capillaries. Flint. -- De*riv"a*tive*ly , adverb -- De*riv"a*tive*ness , noun

Derivative De·riv"a·tive noun 1. That which is derived; anything obtained or deduced from another. 2. (Gram.) A word formed from another word, by a prefix or suffix, an internal modification, or some other change; a word which takes its origin from a root. 3. (Mus.) A chord, not fundamental, but obtained from another by inversion; or, vice versa , a ground tone or root implied in its harmonics in an actual chord. 4. (Medicine) An agent which is adapted to produce a derivation (in the medical sense). 5. (Math.) A derived function; a function obtained from a given function by a certain algebraic process. » Except in the mode of derivation the derivative is the same as the differential coefficient. See Differential coefficient , under Differential . 6. (Chemistry) A substance so related to another substance by modification or partial substitution as to be regarded as derived from it; thus, the amido compounds are derivatives of ammonia, and the hydrocarbons are derivatives of methane, benzene, etc.

Derive De·rive" transitive verb [ imperfect & past participle Derived ; present participle & verbal noun Deriving .] [ French dériver , Latin derivare ; de- + rivus stream, brook. See Rival .] 1. To turn the course of, as water; to divert and distribute into subordinate channels; to diffuse; to communicate; to transmit; -- followed by to , into , on , upon . [ Obsolete]

For fear it [ water] choke up the pits . . . they [ the workman] derive it by other drains.

Holland.

Her due loves derived to that vile witch's share.

Spenser.

Derived to us by tradition from Adam to Noah.

Jer. Taylor. 2. To receive, as from a source or origin; to obtain by descent or by transmission; to draw; to deduce; -- followed by from . 3. To trace the origin, descent, or derivation of; to recognize transmission of; as, he derives this word from the Anglo-Saxon.

From these two causes . . . an ancient set of physicians derived all diseases.

Arbuthnot. 4. (Chemistry) To obtain one substance from another by actual or theoretical substitution; as, to derive an organic acid from its corresponding hydrocarbon. Syn. -- To trace; deduce; infer.

Derive De·rive" intransitive verb To flow; to have origin; to descend; to proceed; to be deduced. Shak.

Power from heaven
Derives , and monarchs rule by gods appointed.

Prior.

Derivement De·rive"ment noun That which is derived; deduction; inference. [ Obsolete]

I offer these derivements from these subjects.

W. Montagu.

Deriver De·riv"er noun One who derives.

Derk Derk adjective Dark. [ Obsolete] Chaucer.

Derm Derm noun [ Greek de`rma , -atos , skin, from ... to skin, flay: confer French derme . See Tear , transitive verb ] 1. The integument of animal; the skin. 2. (Anat.) See Dermis .

Derma Der"ma noun [ New Latin See Derm .] (Anat.) See Dermis .

Dermal Derm"al adjective [ From Derm .] 1. Pertaining to the integument or skin of animals; dermic; as, the dermal secretions. 2. (Anat.) Pertaining to the dermis or true skin.

Dermaptera, Dermapteran Der·map"te·ra, Der·map"ter·an noun (Zoology) See Dermoptera , Dermopteran .

Dermatic, Dermatine Der·mat"ic, Der"ma·tine adjective [ Greek ..., ..., from ... skin.] Of or pertaining to the skin.

Dermatitis Der`ma·ti"tis noun [ New Latin , from Greek de`rma , -atos , skin + -itis .] (Medicine) Inflammation of the skin.

Dermatogen Der·mat"o·gen noun [ Greek de`rma , -atos , skin + -gen .] (Botany) Nascent epidermis, or external cuticle of plants in a forming condition.

Dermatography Der·ma·tog"ra·phy noun [ Greek de`rma , -atos , skin + -graphy .] An anatomical description of, or treatise on, the skin.

Dermatoid Der"ma·toid adjective [ Greek de`rma , -atos , skin + -oid : confer French dermatoïde . Confer Dermoid .] Resembling skin; skinlike.

Dermatologist Der`ma·tol"o·gist noun One who discourses on the skin and its diseases; one versed in dermatology.

Dermatology Der`ma·tol"o·gy noun [ Greek de`rma , -atos , skin + -logy : confer French dermatologie .] The science which treats of the skin, its structure, functions, and diseases.

Dermatopathic Der`ma·to·path"ic adjective [ Greek de`rma , -atos , skin + pa`qos suffering.] (Medicine) Of or pertaining to skin diseases, or their cure.

Dermatophyte Der·mat"o·phyte (dẽr*măt"o*fīt or dẽr"mȧ*to*fīt) noun [ Greek de`rma , -atos , skin + fyto`n plant.] (Medicine) A vegetable parasite, infesting the skin.
[ 1913 Webster]

Dermestes Der·mes"tes noun [ New Latin , from Greek dermhsth`s ; de`rma skin + root of ... to eat.] (Zoology) A genus of coleopterous insects, the larvæ of which feed animal substances. They are very destructive to dries meats, skins, woolens, and furs. The most common species is D. lardarius , known as the bacon beetle .

Dermestoid Der·mes"toid adjective [ Dermestes + -oid .] (Zoology) Pertaining to or resembling the genus Dermestes.

The carpet beetle, called the buffalo moth, is a dermestoid beetle.

Pop. Sci. Monthly.

Dermic Der"mic adjective 1. Relating to the derm or skin. 2. (Anat.) Pertaining to the dermis; dermal.

Underneath each nail the deep or dermic layer of the integument is peculiarly modified.

Huxley. Dermic remedies (Medicine) , such as act through the skin.

Dermis Der"mis noun [ New Latin See Derm .] (Anat.) The deep sensitive layer of the skin beneath the scarfskin or epidermis; -- called also true skin , derm , derma , corium , cutis , and enderon . See Skin , and Illust. in Appendix.

Dermobranchiata Der`mo·bran`chi·a"ta noun plural [ New Latin ] (Zoology) A group of nudibranch mollusks without special gills.

Dermobranchiate Der`mo·bran"chi·ate adjective [ Derm + branchiate .] (Zoology) Having the skin modified to serve as a gill.

Dermohæmal Der`mo·hæ"mal adjective (Anat.) Pertaining to, or in relation with, both dermal and hæmal structures; as, the dermohæmal spines or ventral fin rays of fishes.

Dermoid Der"moid adjective [ Derm + - oid : confer French dermoïde .] Same as Dermatoid . Dermoid cyst (Medicine) , a cyst containing skin, or structures connected with skin, such as hair.

Dermoneural Der`mo·neu"ral adjective (Anat.) Pertaining to, or in relation with, both dermal and neural structures; as, the dermoneural spines or dorsal fin rays of fishes. Owen.

Dermopathic Der`mo·path"ic adjective (Medicine) Dermatopathic.

Dermophyte Der"mo·phyte noun A dermatophyte.

Dermoptera Der·mop"te·ra noun plural [ New Latin , from Greek ... skin + ... wing.] 1. (Zoology) The division of insects which includes the earwigs ( Forticulidæ ). 2. (Zoology) A group of lemuroid mammals having a parachutelike web of skin between the fore and hind legs, of which the colugo ( Galeopithecus ) is the type. See Colugo . 3. (Zoology) An order of Mammalia; the Cheiroptera. [ Written also Dermaptera , and Dermatoptera .]

Dermopteran Der·mop"ter·an noun (Zoology) An insect which has the anterior pair of wings coriaceous, and does not use them in flight, as the earwig.

Dermopteri Der·mop"te·ri noun plural [ New Latin ] (Zoology) Same as Dermopterygii .

Dermopterygii Der·mop`te·ryg"i·i noun plural [ New Latin , from Greek ... skin + ... wing, fin, dim. of ... wing.] (Zoology) A group of fishlike animals including the Marsipobranchiata and Leptocardia.

Dermoskeleton Der`mo·skel"e·ton noun [ Derm + skeleton .] (Anat.) See Exoskeleton .

Dermostosis Der`mos·to"sis noun [ New Latin , from Greek ... skin + ... bone.] (Physiol.) Ossification of the dermis.

Dern Dern noun [ Etymol. uncertain.] A gatepost or doorpost. [ Local Eng.] C. Kingsley.

Dern Dern adjective [ See Dearn , adjective ] 1. Hidden; concealed; secret. [ Obsolete] "Ye must be full dern ." Chaucer. 2. Solitary; sad. [ Obsolete] Dr. H. More.

Derne Derne transitive verb & i. [ Anglo-Saxon dyrnan to hide. See Dern , adjective , Dearn , adjective ] To hide; to skulk. [ Scot.]

He at length escaped them by derning himself in a foxearth.

H. Miller.

Dernful Dern"ful adjective Secret; hence, lonely; sad; mournful. [ Obsolete] " Dernful noise." Spenser.

Dernier Der`nier" adjective [ French, from Old French darrein , derrain . See Darrein .] Last; final. Dernier ressort [ French], last resort or expedient.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Webster > Letter D > Page 43 of 135.
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