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cnidocil

American  
[nahy-duh-sil] / ˈnaɪ də sɪl /

noun

Zoology.
  1. a hairlike sensory process projecting from the surface of a cnidoblast, believed to trigger the discharge of the nematocyst.


Etymology

Origin of cnidocil

1880–85; cnido- + -cil < New Latin cilium; cilia