/ Dictionary / Index M metaxylem: Meaning and Definition of Find definitions for: met•a•xy•lem Pronunciation: (met"u-zī'lum, -lem), [key] — n. Bot. the part of the primary xylem that is the last to be formed, usually having weblike or pitted surfaces. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Metaxas métayage Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language