Part 855

Lubbock.

||Eu"rus (?), n. [L., gr. &?;.] The east wind.

||Eu*ry"a*le (?), n. [NL., fr. Euryale, one of the Gorgons.] 1. (Bot.) A genus of water lilies, growing in India and China. The only species (E. ferox) is very prickly on the peduncles and calyx. The rootstocks and seeds are used as food.

2. (Zoöl) A genus of ophiurans with much-branched arms.

||Eu`ry*al"i*da (?), n. pl. [NL.] (Zoöl.) A tribe of Ophiuroidea, including the genera Euryale, Astrophyton, etc. They generally have the arms branched. See Astrophyton.

Eu*ryc"er*ous (?), a. [Gr. &?; broad + ke`ras horn.] (Zoöl.) Having broad horns.

Eu*ryp"ter*oid (?), a. [Eurypterus + -oid.] (Paleon.) Like, or pertaining to, the genus Euryperus.

||Eu*ryp`te*roi"de*a (?), n. pl. [NL. See Eurypteroid.] (Paleont.) An extinct order of Merostomata, of which the genus Eurypterus is the type. They are found only in Paleozoic rocks. [Written also Eurypterida.]

||Eu*ryp"te*rus (?), n. [NL., fr. Gr. &?; broad + &?; a wing.] (Paleon.) A genus of extinct Merostomata, found in Silurian rocks. Some of the species are more than three feet long.

Eu"ryth*my (?), n. [L. eurythmia, Gr. &?;; &?; well + &?; rhythm, measure, proportion, symmetry: cf. F. eurythmie.] 1. (Fine Arts) Just or harmonious proportion or movement, as in the composition of a poem, an edifice, a painting, or a statue.

2. (Med.) Regularly of the pulse.

Eu*se"bi*an (?), n. (Eccl. Hist.) A follower of Eusebius, bishop of Cæsarea, who was a friend and protector of Arius.

Eu*sta"chi*an (?), a. [From Eustachi, a learned Italian physician who died in Rome, 1574.] (Anat.) (a) Discovered by Eustachius. (b) Pertaining to the Eustachian tube; as, Eustachian catheter.

Eustachian catheter, a tubular instrument to be introduced into the Eustachian tube so as to allow of inflation of the middle ear through the nose or mouth. -- Eustrachian tube (Anat.), a passage from the tympanum of the ear to the pharynx. See Ear. -- Eustachian valve (Anat.), a crescent-shaped fold of the lining membrane of the heart at the entrance of the vena cava inferior. It directs the blood towards the left auricle in the fetus, but is rudimentary and functionless in the adult.

Eu"style` (?), n. [Gr. &?;, neut. of &?; with pillars at the best distances; &?; well + &?; pillar: cf. F. eustyle.] (Arch.) See Intercolumnlation.

Eu"tax*y (?), n. [Gr. &?;; &?; well + &?; arrangement: cf. F. eutaxie.] Good or established order or arrangement. [R.] E. Waterhouse.

Eu*ter"pe (?). [L., fr. Gr. &?;, fr. &?; delightful; &?; well + &?; to delight.] 1. (Class. Myth.) The Muse who presided over music.

2. (Bot.) A genus of palms, some species of which are elegant trees.

Eu*ter"pe*an (?) a. Of or pertaining to Euterpe or to music.

Eu`tha*na"si*a (?) n. [NL., fr. Gr. &?;; &?; well + &?; death, &?;, &?;, to die: cf. F. euthanasie.] An easy death; a mode of dying to be desired. "An euthanasia of all thought." Hazlitt.

The kindest wish of my friends is euthanasia.

Arbuthnot.

Eu*than"a*sy (?), n. Same as Euthanasia.

Eu`thi*o*chro"ic (?), a. [Gr. &?; well + &?; sulphur + &?; color.] (Chem.) Pertaining to, or denoting, an acid so called.

Euthiochroic acid (Chem.), a complex derivative of hydroquinone and sulphonic (thionic) acid. -- so called because it contains sulphur, and forms brilliantly colored (yellow) salts.

Eu`thy*neu"ra (?), n. pl. [NL., fr. Gr. &?; straight + &?; a nerve.] (Zoöl.) A large division of gastropod molluske, including the Pulmonifera and Opisthobranchiata.

Eu"tro*phy (?), n. [Gr. &?;, fr. &?; nourishing, healthy; &?; well + &?; to nourish.] (Med.) Healthy nutrition; soundless as regards the nutritive functions.

Eu*tych"i*an (?), n. (Eccl. Hist.) A follower of Eutyches [5th century], who held that the divine and the human in the person of Christ were blended together as to constitute but one nature; a monophysite; -- opposed to Nestorian.