from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A plant cell that differs noticeably in form from neighboring cells.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An isolated specialised cell found in the midst of an otherwise homogeneous group of cells in plant tissue.
from the GNU version of the Collaborative International Dictionary of English
- n. An individual cell, differing greatly from its neighbours in regard to size, structure, or contents.
from The Century Dictionary and Cyclopedia
- n. A term proposed by Sachs for certain individual cells or tissue-elements which differ greatly, as regards their contents, from the surrounding tissues. Such are the resin-cells, tannin-cells, crystal-cells, etc., found in various plants.
- n. In biology, one of the hypothetical, ultimate elements of living protoplasm, similar to the gemmules of Darwin, the physiological units of Herbert Spencer, the biophores of Weismann, etc.
idio- + -blast (Wiktionary)