a combining form meaning “fingered, possessing fingers,” or “toed, possessing toes,” used to form compound words in which the initial element specifies the type or number of fingers or toes: tridactylous.
Origin of -dactylous
< Greek -daktylos, adj. derivative of dáktylos finger, toe; see -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019