[pahy-luh s]

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

a hair or hairlike structure.

Nearby words

  1. piltz sign,
  2. pilular,
  3. pilule,
  4. pilum,
  5. pilumnus,
  6. pilus incarnatus,
  7. pim,
  8. pima,
  9. pima cotton,
  10. piman

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



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.