from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A stinging or grasping organ in the outer cytoplasm of certain protozoans, especially ciliates, consisting of a threadlike or bristlelike filament that can be discharged suddenly from a minute capsule.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A threadlike organ in certain protozoans that can be discharged suddenly in order to grasp or sting

from the GNU version of the Collaborative International Dictionary of English

  • n. A lasso cell.

from The Century Dictionary and Cyclopedia

  • n. 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.


Sorry, no etymologies found.


Sorry, no example sentences found.

Wordnik is becoming a not-for-profit! Read our announcement here.


Log in or sign up to get involved in the conversation. It's quick and easy.