Etymologicon Et`y·mo·log"i·con (-ĭ*kŏn) noun [ New Latin , from Greek 'etymologiko`n , prop. neut. sing. from 'etymologiko`s .] An etymological dictionary or manual.

Etymologist Et`y·mol"o·gist (ĕt`ĭ*mŏl"o*jĭst) noun [ Confer French étymologiste .] One who investigates the derivation of words.

Etymologize Et`y·mol"o·gize (-jīz) transitive verb [ Confer French étymologiser .] To give the etymology of; to trace to the root or primitive, as a word. Camden

Etymologize Et`y·mol"o·gize transitive verb To search into the origin of words; to deduce words from their simple roots.

How perilous it is to etymologize at random.

Trench.

Etymology Et`y·mol"o·gy (-jȳ) noun ; plural Etymologies (-jĭz). [ Latin etymologia , Greek 'etymologi`a ; 'e`tymon etymon + lo`gos discourse, description: confer French étymologie . See Etymon , and -logy .] 1. That branch of philological science which treats of the history of words, tracing out their origin, primitive significance, and changes of form and meaning. 2. That part of grammar which relates to the changes in the form of the words in a language; inflection.

Etymon Et"y·mon noun ; plural English Etymons , Greek Etyma . [ Latin , from Greek 'e`tymon the true literal sense of a word according to its derivation, an etymon, from ... true, real, prob, akin to Sanskrit sotya , English sooth . See Sooth .] 1. An original form; primitive word; root. 2. Original or fundamental signification. [ R.]

Given as the etymon or genuine sense of the word.

Coleridge.

Etypical E·typ"ic·al adjective [ Prefix e- + typical .] (Biol.) Diverging from, or lacking conformity to, a type.

Eu Eu [ Greek ... well, orig. neut. of ... good; probably connected with Sanskrit su , from the same root as English is ; or with Sanskrit vasu good, probably from the same root as English was .] A prefix used frequently in composition, signifying well , good , advantageous ; -- the opposite of dys- .

Eucairite Eu·cai"rite noun [ Greek ... seasonable, opportune; ... well, good + ... season.] (Min.) A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.

Eucalyn Eu"ca·lyn (ū"kȧ*lĭn) noun (Chemistry) An unfermentable sugar, obtained as an uncrystallizable sirup by the decomposition of melitose; also obtained from a Tasmanian eucalyptus , -- whence its name.

Eucalyptol Eu`ca·lyp·tol noun [ Eucalyptus + Latin ol eum oil.] (Chemistry) A volatile, terpenelike oil extracted from the eucalyptus, and consisting largely of cymene.

Eucalyptus Eu`ca·lyp"tus noun [ New Latin , from GR. ... well, good + ... covered. The buds of Eucalyptus have a hemispherical or conical covering, which falls off at anthesis.] (Botany) A myrtaceous genus of trees, mostly Australian. Many of them grow to an immense height, one or two species exceeding the height even of the California Sequoia. » They have rigid, entire leaves with one edge turned toward the zenith. Most of them secrete resinous gums, whence they called gum trees , and their timber is of great value. Eucalyptus Globulus is the blue gum; E. gigantea , the stringy bark: E. amygdalina , the peppermint tree. E. Gunnii , the Tasmanian cider tree, yields a refreshing drink from wounds made in the bark in the spring. Other species yield oils, tars, acids, dyes and tans. It is said that miasmatic valleys in Algeria and Portugal, and a part of the unhealthy Roman Campagna, have been made more salubrious by planting groves of these trees.

Eucharis Eu"cha·ris noun [ New Latin , from Latin eucharis agreeable, Greek e'y`charis See Eucharist .] (Botany) A genus of South American amaryllidaceous plants with large and beautiful white blossoms.

Eucharist Eu"cha·rist noun [ Latin eucharistia , Greek e'ycharisti`a , lit., a giving of thanks; e'y^ + cha`ris favor, grace, thanks; akin to chai`rein to rejoice, and probably to yearn : confer French eucharistie .] 1. The act of giving thanks; thanksgiving. [ Obsolete]

Led through the vale of tears to the region of eucharist and hallelujahs.

South. 2. (Eccl.) The sacrament of the Lord's Supper; the solemn act of ceremony of commemorating the death of Christ, in the use of bread and wine, as the appointed emblems; the communion. -- See Sacrament .

Eucharistic, Eucharistical Eu`cha·ris"tic, Eu`cha·ris"tic·al adjective [ Confer French eucharistie .] 1. Giving thanks; expressing thankfulness; rejoicing. [ Obsolete]

The eucharistical part of our daily devotions.

Ray. 2. Pertaining to the Lord's Supper. "The eucharistic sacrament." Sir. G. C. Lewis.

Euchite Eu"chite noun [ From Greek ... to pray.] One who resolves religion into prayer. [ Obsolete] Gauden.

Euchloric Eu·chlo"ric adjective [ Greek e'y`chlwro`s fresh and green; e'y^ well + chlwro`s pale green.] (Chemistry) Relating to, or consisting of, euchlorine; as, euchloric gas. Davy.

Euchlorine Eu·chlo"rine noun [ Confer French euchlorine . See Euchloric .] (Chemistry) A yellow or greenish yellow gas, first prepared by Davy, evolved from potassium chlorate and hydrochloric acid. It is supposed to consist of chlorine tetroxide with some free chlorine.

Euchologion, Euchology Eu`cho·lo"gi·on, Eu·chol"o·gy noun [ New Latin euchologion , Greek ... prayer book; ... prayer, vow (fr. ... to pray) + ... to say, speak.] (Eccl.) A formulary of prayers; the book of offices in the Greek Church, containing the liturgy, sacraments, and forms of prayers.

Euchologue Eu"cho·logue noun [ French euchologe .] Euchology. [ R.]

Euchre Eu"chre noun [ Perh. from French écarté .] A game at cards, that may be played by two, three, or four persons, the highest card (except when an extra card called the Joker is used) being the knave of the same suit as the trump, and called right bower , the lowest card used being the seven, or frequently, in two-handed euchre, the nine spot. See Bower .

Euchre Eu"chre transitive verb 1. To defeat, in a game of euchre, the side that named the trump. 2. To defeat or foil thoroughly in any scheme. [ Slang.]

Euchroic Eu·chro"ic adjective [ Greek ... well- colored; ... well + ... color.] (Chemistry) Having a fine color. Euchroic acid (Chemistry) , an organic, imide acid, obtained as a colorless crystalline substance, C ₁₂ H ₄ N ₂ O ₈ by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance ( euchrone ), -- hence its name.

Euchroite Eu"chro·ite noun [ See Euchroic .] (Min.) A mineral occurring in transparent emerald green crystals. It is hydrous arseniate of copper.

Euchrone Eu"chrone noun (Chemistry) A substance obtained from euchroic acid. See Eychroic .

Euchymy Eu"chy·my noun [ Greek ... well + ... juice liquid. See Chyme .] (Medicine) A good state of the blood and other fluids of the body.

Euclase Eu"clase noun [ Greek ... well, easily + ... to break. Confer French euclase , German euklas . See named from its brittleness.] (Min.) A brittle gem occurring in light green, transparent crystals, affording a brilliant clinodiagonal cleavage. It is a silicate of alumina and glucina.

Euclid Eu"clid noun A Greek geometer of the 3d century b. c. ; also, his treatise on geometry, and hence, the principles of geometry, in general.

Euclidian Eu·clid"i·an noun Related to Euclid, or to the geometry of Euclid. Euclidian space (Geom.) , the kind of space to which the axioms and definitions of Euclid, relative to straight lines and parallel lines, apply; -- called also flat space , and homaloidal space .

Eucopepoda Eu`co·pep"o·da noun plural [ New Latin See Eu- and Copepoda .] (Zoology) A group which includes the typical copepods and the lerneans.

Eucrasy Eu"cra·sy [ Greek ...; ..., well-tempered; e'y^ well + ... to mix, temper: confer French eucrasie .] (Medicine) Such a due mixture of qualities in bodies as constitutes health or soundness. Quincy.

Euctical Euc"tic·al [ Greek ..., from ... to pray, wish.] Expecting a wish; supplicatory. [ R.]

Sacrifices . . . distinguished into expiatory, euctical , and eucharistical.

Bp. Law.

Eudemon, Eudæmon Eu·de"mon, Eu·dæ"mon noun [ Greek e'y^ well, good + ... one's demon.] A good angel. Southey.

Eudemonics, Eudæmonics Eu`de·mon"ics, Eu`dæ·mon"ics noun [ Greek ... conducive to happiness. See Eudemonism .] That part of moral philosophy which treats of happiness; the science of happiness; -- contrasted with aretaics . J. Grote.

Eudemonism, Eudæmonism Eu·de"mon·ism, Eu·dæ"mon·ism noun [ Greek ... a thinking happy, fr, ... blessed with a good genius, happy; e'y^ well, good + ... one's demon of genius. See Demon .] That system of ethics which defines and enforces moral obligation by its relation to happiness or personal well-being.

Eudemonist, Eudæmonist Eu·de"mon·ist, Eu·dæ"mon·ist noun One who believes in eudemonism.

I am too much of a eudæmonist ; I hanker too much after a state of happiness both for myself and others.

De Quincey.

Eudemonistic, Eudæmonistic Eu·de`mon·is"tic, Eu·dæ`mon·is"tic adjective Of or pertaining to eudemonism.

Eudemonistical, Eudæmonistical Eu·de`mon·is"tic·al, Eu·dæ`mon·is"tic·al adjective Eudemonistic.

Eudialyte Eu·di"a·lyte noun [ Greek e'y^ well, easily + ... to dissolve. So called because easily dissolvable in acids.] (Min.) A mineral of a brownish red color and vitreous luster, consisting chiefly of the silicates of iron, zirconia, and lime.

Eudiometer Eu`di·om"e·ter noun [ Greek ... fair, clear weather, from ... fine, clear ( said of the air or weather) + -meter : confer French ediomètre .] (Chemistry) An instrument for the volumetric measurement of gases; -- so named because frequently used to determine the purity of the air. » It usually consists of a finely graduated and calibrated glass tube, open at one end, the bottom; and having near the top a pair of platinum wires fused in, to allow the passage of an electric spark, as the process involves the explosion and combustion of one of the ingredients to be determined. The operation is conducted in a trough of mercury, or sometimes over water. Confer Burette . Ure's eudiometer has the tube bent in the form of the letter. U.

Eudiometric, Eudiometrical Eu`di·o·met"ric, Eu`di·o·met"ric·al adjective Of or pertaining to a eudiometer; as, eudiometrical experiments or results.

Eudiometry Eu`di·om"e·try noun [ Confer French eudiométrie .] (Chemistry) The art or process of determining the constituents of a gaseous mixture by means of the eudiometer, or for ascertaining the purity of the air or the amount of oxygen in it.

Eudipleura Eu`di·pleu"ra noun plural [ New Latin , from Greek e'y^ well + ... double + ... rib,..., plural,side.] (Biol.) The fundamental forms of organic life, that are composed of two equal and symmetrical halves. Syd. Soc. Lex.

Eudoxian Eu·dox"i·an noun (Eccl. Hist.) A follower of Eudoxius, patriarch of Antioch and Constantinople in the 4th century, and a celebrated defender of the doctrines of Arius.

Euganoidei Eu`ga·noi"de·i noun plural [ New Latin , from Greek e'y^ well + New Latin ganoidei . See Ganoid .] (Zoöl) A group which includes the bony ganoids, as the gar pikes.

Euge Eu"ge noun [ Latin , well done! bravo! Greek ....] Applause. [ Obsolete] Hammond.

Eugenesis Eu·gen"e·sis noun [ Prefix eu- + genesis .] (Biol.) The quality or condition of having strong reproductive powers; generation with full fertility between different species or races, specif. between hybrids of the first generation.

Eugenia Eu·ge"ni·a (u*jē"nĭ*ȧ) noun [ New Latin Named in honor of Prince Eugene of Savoy.] (Botany) A genus of myrtaceous plants, mostly of tropical countries, and including several aromatic trees and shrubs, among which are the trees which produce allspice and cloves of commerce.

Eugenic Eu·gen"ic (u*jĕn"ĭk) adjective [ See Eugenia .] (Chemistry) Pertaining to, or derived from, cloves; as, eugenic acid.

Eugenic Eu·gen"ic (u*jĕn"ĭk) adjective [ Greek e'ygenh`s .] Well-born; of high birth. Atlantic Monthly.