/ Dictionary / Index H hylo-: Meaning and Definition of Find definitions for: hylo- Pronunciation: [key] a combining form meaning “wood,” “matter,” used in the formation of compound words: hylophagous; hylotheism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyla hylomorphic Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language