Meso- Definition

mesō, mezō; mesə; mēsō, mēsə

prefix

In the middle; middle.

Mesoderm.

American Heritage

Intermediate.

Mesophyte.

American Heritage

Wiktionary

Wiktionary

(chemistry) Designating an achiral member of a group of diastereoisomers that has at least one chiral member.

Meso-tartaric acid.

Wiktionary

affix

In the middle, intermediate.

Mesocarp, Mesozoic.

Webster's New World

Origin of Meso-

Greek from mesos middle medhyo- in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition
From Ancient Greek μέσος (mésos, “middle").

From Wiktionary

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