Deutero- Definition

do͝otərō, dyo͝otərō

prefix

Second; secondary.

Deuterocanonical.

American Heritage

Used to form terms meaning second or secondary.

Wiktionary

(chemistry) Used to describe material containing deuterium (instead of hydrogen)

Wiktionary

affix

Second, secondary.

Deuterogamy.

Webster's New World

other

A prefix meaning “second” or “secondary,” as in deuterostome, an animal whose mouth is the second opening to develop.

American Heritage Science

Origin of Deutero-

Greek deuteros second, secondary deu-¹ in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition

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