/ Dictionary / Index S spirograph: Meaning and Definition of Find definitions for: spi•ro•graph Pronunciation: (spī'ru-graf", -gräf"), [key] — n. an instrument for recording respiratory movements. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spirograph (Thesaurus) spirochetosis spirogyra Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language