/ Dictionary / Index O octagon house: Meaning and Definition of Find definitions for: oc'tagon house" Pronunciation: [key] a type of American house, c. 1850, having an octagonal perimeter to reduce exterior wall area. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. octagonal octagon scale Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language