/ Dictionary / Index M microlecithal: Meaning and Definition of Find definitions for: mi•cro•lec•i•thal Pronunciation: (mī"kru-les'i-thul), [key] — adj. Embryol. having a small amount of yolk, as certain eggs or ova. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microinstruction microlite Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language