trichocyst

noun
tricho·​cyst | \ˈtri-kə-ˌsist \

Definition of trichocyst 

: any of the minute lassoing or stinging organelles of protozoans and especially of many ciliates

First Known Use of trichocyst

1859, in the meaning defined above

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The first known use of trichocyst was in 1859

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trichocyst

noun
tricho·​cyst | \ˈtrik-ə-ˌsist \

Medical Definition of trichocyst 

: any of the minute projectile organs that release adhesive threads when discharged and that occur on the body of protozoans and especially of many ciliates

More from Merriam-Webster on trichocyst

Britannica.com: Encyclopedia article about trichocyst

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