/ Dictionary / Index C controllable-pitch: Meaning and Definition of Find definitions for: con•trol•la•ble-pitch Pronunciation: (kun-trō'lu-bul-pich'), [key] — adj. (of a marine or aircraft propeller) having blades whose pitch can be changed during navigation or flight; variable-pitch. Cf. adjustable-pitch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. control group controlled-release Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language