from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An organelle in certain protozoans, especially ciliates, consisting of filamentous fibers that are discharged suddenly.
from The Century Dictionary.
- noun A hair-cell; one of the minute rod-like or hair-like bodies developed in the subcuticular layer of many infusorians: so named by G. J. Allman in 1855. They represent or resemble the cnidæ or threadcells of cœlenterates.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Zoöl.) A lasso cell.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A threadlike organ in certain
protozoansthat can be discharged suddenly in order to graspor sting
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