gelatinizePronunciation: /dʒɪˈlatɪnʌɪz/ (also gelatinise)Definition of gelatinize verb make or become gelatinous or jelly-like: [with object]:water gelatinizes the granules [no object]:the starch grains swell and gelatinize [with object] (usually as adjective gelatinized) coat with gelatin:gelatinized glass microscope slidesDerivatives gelatinization noun gelatinize in other Oxford dictionaries Definition of gelatinize in the US English dictionary