/ Dictionary / Index R right circular cylinder: Meaning and Definition of Find definitions for: right' cir'cular cyl'inder Pronunciation: [key] — Geom. Geom. a cylinder generated by the revolution of a rectangle about one of its sides. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. right circular cone righteous Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language