/ Dictionary / Index C ctenizid: Meaning and Definition of Find definitions for: cten•i•zid Pronunciation: (ten'u-zid), [key] — n. a spider of the family Ctenizidae, comprising the trap-door spiders. —adj. belonging or pertaining to the ctenizids. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ctenidium cteno- Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language