cnidocil
Noun
Meaning
The fine filiform process of a cnidoblast.
Source: Webster's dictionaryExamples
A dormant nematocyst discharges in response to nearby prey touching the trigger (cnidocil).
The externally oriented side of the cell also has a hair-like trigger called a cnidocil.
At the narrow outer edge of the cnidocyte is a short trigger hair called a cnidocil.