/ Dictionary / Index X xylostroma: Meaning and Definition of Find definitions for: xy•lo•stro•ma Pronunciation: (zī"lu-strō'mu), [key] — pl. -ma•ta the felted, blackish stroma of some species of wood-destroying fungi. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. xylose xylotomous Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language