CENTROSOME
Cen"tro*some`, n. Etym: [Gr. (Biol.)
Defn: A peculiar rounded body lying near the nucleus of a cell. It is regarded as the dynamic element by means of which the machinery of cell division is organized.
CENTROSPHERE
Cen"tro*sphere, n. [Gr. centre + sphere.]
1. (Geol.)
Defn: The nucleus or central part of the earth, forming most of its mass; — disting. from lithosphere, hydrosphere, etc.
2. (Biol.) The central mass of an aster from which the rays extend and within which the centrosome lies when present; the attraction sphere. The name has been used both as excluding and including the centrosome, and also to designate a modified mass of protoplasm about a centrosome whether aster rays are developed or not.
CENTROSTALTIC
Cen`tro*stal"tic, a. Etym: [Gr. (Physiol.)
Defn: A term applied to the action of nerve force in the spinal center. Marshall Hall.
CENTRUM
Cen"trum, n.; pl. E. Centrums, L. Centra. Etym: [L., center.] (Anat.)
Defn: The body, or axis, of a vertebra. See Vertebra.