/ Dictionary / Index M major axis: Meaning and Definition of Find definitions for: ma'jor ax'is Pronunciation: [key] the axis of an ellipse that passes through the two foci. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. major Major Barbara* Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language