(||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.
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*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.
(Eu"style`) n. [Gr. neut. of with pillars at the best distances; well + pillar: cf. F. eustyle.] (Arch.)
(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.
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`thi*o*chro"ic) a. [Gr. well + sulphur + color.] (Chem.) Pertaining to, or denoting, an
acid so called.
(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.