/ Dictionary / Index O orchid cactus: Meaning and Definition of Find definitions for: or'chid cac"tus Pronunciation: [key] epiphyllum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orchidaceous orchidectomy Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language