macro-

a combining form meaning “large,” “long,” “great,” “excessive,” used in the formation of compound words, contrasting with micro-: macrocosm; macrofossil; macrograph; macroscopic.
Also especially before a vowel, macr-.

Origin of macro-

< Greek makro-, combining form of makrós long; cognate with Latin macer lean; see meager

WORDS THAT MAY BE CONFUSED WITH macro-

macro- micro-

Words nearby macro-

macramé, macready, macrencephaly, macro, macro lens, macro-, macroadenoma, macroaggregated albumin, macroamylase, macroamylasemia, macrobiosis

British Dictionary definitions for macro-

macro-

before a vowel macr-

combining form

large, long, or great in size or duration macroscopic
(in pathology) indicating abnormal enlargement or overdevelopment macrocyte Compare micro- (def. 5)
producing larger than life images macrophotography

Word Origin for macro-

from Greek makros large; compare Latin macer meagre

Medical definitions for macro-

macro-

pref.

Large:macronucleus.
Long:macrobiotic.
Inclusive:macroamylase.

Scientific definitions for macro-

macro-

A prefix meaning “large,” as in macromolecule, a large molecule.