/ Dictionary / Index D distillation column: Meaning and Definition of Find definitions for: distilla'tion col"umn Pronunciation: [key] — Chem. Chem. a type of still fitted with interior baffles, used for fractional distillation. Cf. still (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. distillation distilled Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language