/ Dictionary / Index S spelaean: Meaning and Definition of Find definitions for: spe•lae•an Pronunciation: (spi-lē'un), [key] — adj. of, pertaining to, or inhabiting a cave or caves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speiss speleology Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language