/ Dictionary / Index M macrostructure: Meaning and Definition of Find definitions for: mac•ro•struc•ture Pronunciation: (mak'rō-struk"chur), [key] — n. the gross structure of a metal, as made visible to the naked eye by deep etching. an overall organizational scheme, as of a complex piece of writing. any overall structure, as a gross anatomical part. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macrospore macruran Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language