a combining form meaning “second,” used in the formation of compound words: deuterocanonical.
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A Long List of Affixes: Suffixes, Prefixes, and Combining Forms
Suffixes -able, -ible, -ile: (form adjs) able to, fit to, worthy, capable; apt to; subject to being ~-ed -ac: one affect with -ac, -al, -ane, -ar, -ary, -ch, -ese, -ic, -ical, -id, -ile, -ine, -ish, -ory: like, of, pertaining to; characterized by -aceae: families of plants -aceous, -ous: resemblance to a substance; full of -acy, -age, -ance, -ancy, -asm, -dom, -ence, -ency, -hood, -ism, -ity, -ment, -mony, -ness, -ry, -ship, …
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. 2019
deuto-, before a vowel deuter- or before a vowel deut-
second or secondarydeuterogamy; deuterium
(in chemistry) indicating the presence of deuterium
Word Origin for deutero-
from Greek deuteros second
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A prefix meaning second or secondary, as in deuterostome, an animal whose mouth is the second opening to develop.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.