Defn: A genus of extinct Merostomata, found in Silurian rocks. Some of the species are more than three feet long.
EURYTHMY
Eu"ryth*my, n. Etym: [L. eurythmia, Gr. eurythmie.]
1. (Fine Arts)
Defn: Just or harmonious proportion or movement, as in the composition of a poem, an edifice, a painting, or a statue.
2. (Med.)
Defn: Regularly of the pulse.
EUSEBIAN
Eu*se"bi*an, n. (Eccl. Hist.)
Defn: A follower of Eusebius, bishop of Cæsarea, who was a friend and protector of Arius.
EUSTACHIAN Eu*sta"chi*an, a. Etym: [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.
EUSTYLE
Eu"style`, n. Etym: [Gr. eustyle.] (Arch.)