from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small region of cytoplasm adjacent to the nucleus that contains the centrioles and serves to organize microtubules.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An organelle, near the nucleus in the cytoplasm of most organisms, that controls the organization of its microtubules
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
from The Century Dictionary and Cyclopedia
- n. In cytology, a body of indeterminate nature in the center of each astrosphere of the dividing-cell.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. small region of cytoplasm adjacent to the nucleus; contains the centrioles and serves to organize the microtubules
centro- + -some (Wiktionary)