/ Dictionary / Index D dendro-: Meaning and Definition of Find definitions for: dendro- Pronunciation: [key] a combining form meaning “tree,” used in the formation of compound words: dendrology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dendritic cell dendrobium Related Content Daily Word Quiz: foliage Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language