aciculum

[ uh-sik-yuh-luh m ]
/ əˈsɪk yə ləm /

noun, plural a·cic·u·lums, a·cic·u·la [uh-sik-yuh-luh] /əˈsɪk yə lə/.

Zoology. one of the slender, sharp stylets embedded in the parapodia of certain annelid worms, as the polychaetes.

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decorum

Origin of aciculum

alteration of acicula
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for aciculum

aciculum
/ (əˈsɪkjʊləm) /

noun plural -lums or -la (-lə)

a needle-like bristle that provides internal support for the appendages (chaetae) of some polychaete worms

Word Origin for aciculum

C19: New Latin; see acicula
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012