- a combining form meaning “second,” used in the formation of compound words: deuterocanonical.
Also especially before a vowel, deuter-.
Origin of deutero-
< Greek, combining form of deúteros
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
deuto-, before a vowel deuter- or before a vowel deut-
- second or secondarydeuterogamy; deuterium
- (in chemistry) indicating the presence of deuterium
from Greek deuteros second
- Second; secondary:deuteropathy.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A prefix meaning second or secondary, as in deuterostome, an animal whose mouth is the second opening to develop.