(||Cni"da) n.; pl. Cnidæ [NL., fr. Gr. kni`dh nettle, sea nettle.] (Zoöl.) One of the peculiar stinging
cells found in Clenterata; a nematocyst; a lasso cell.
(||Cni*da"ri*a) n. pl. [NL. See Cnida.] (Zoöl.) A comprehensive group equivalent to the true
Clenterata, i. e., exclusive of the sponges. They are so named from presence of stinging cells (cnidae)
in the tissues. See Coelenterata.
(Cni"do*blast) n. [Cnida + -blast.] (Zoöl.) One of the cells which, in the Clenterata, develop
(Cni"do*cil) n. [Cnida + cilium eyelash.] (Zoöl.) The fine filiform process of a cnidoblast.
(Co-) A form of the prefix com-, signifying with, together, in conjunction, joint. It is used before
vowels and some consonants. See Com-.
(Co`a*cer"vate) a. [L. coacervatus, p. p. of coacervare to heap up; co- + acervare. See
Acervate.] Raised into a pile; collected into a crowd; heaped. [R.] Bacon.
(Co`a*cer"vate) v. t. To heap up; to pile. [R.]
(Co*ac`er*va"tion) n. [L. coacervatio.] A heaping together. [R.] Bacon.
(Coach) n. [F. coche, fr. It. cocchio, dim. of cocca little boat, fr. L. concha mussel, mussel
shell, Gr. akin to Skr. çankha. Cf. Conch, Cockboat, Cockle.]
1. A large, closed, four- wheeled carriage, having doors in the sides, and generally a front and back
seat inside, each for two persons, and an elevated outside seat in front for the driver.
Coaches have a variety of forms, and differ in respect to the number of persons they can carry. Mail
coaches and tallyho coaches often have three or more seats inside, each for two or three persons, and
seats outside, sometimes for twelve or more.
2. A special tutor who assists in preparing a student for examination; a trainer; esp. one who trains a
boat's crew for a race. [Colloq.]
Wareham was studying for India with a Wancester coach.