[ pahy-luh s ]
/ ˈpaɪ ləs /

noun, plural pi·li [pahy-lahy] /ˈpaɪ laɪ/. Biology.

a hair or hairlike structure.

Origin of pilus

Borrowed into English from Latin around 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pilus

Medicine definitions for pilus


[ pīləs ]

n. pl. pi•li (-lī′)

A hair.
A fine filamentous appendage, somewhat analogous to the flagellum, that occurs on some bacteria.fimbria

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.