- a combining form meaning “hair,” used in the formation of compound words: chaetophorous.
Origin of chaeto-
1865–70; combining form representing Greek chaítē; see chaeta
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
before vowels chaet-, word-forming element meaning "hair," also, in scientific use, "spine, bristle," from Latinized form of Greek khaite "long, flowing hair" (of persons, also of horses, lions), related to Avestan gaesa- "curly hair."
Online Etymology Dictionary, © 2010 Douglas Harper