Category:Vibraculum

Vi*brac"u*lum, n.; pl. Vibracula. Etym: [nl., dim. from l. vibrare to Vibrate.] (zoöl.)

Defn: one of the movable, slender, spinelike organs or parts with Which certain bryozoans are furnished. They are regarded as specially Modified zooids, of nearly the same nature as avicularia.