prilosec prillion • prim · · · Info · Definitions · Synonyms · Characters · · prilosec · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) antacid (trade name Prilosec) that suppresses acid secretion in the stomach. Synonyms: omeprazole, Prilosec. · · Noun Definition 1 Synonyms · · · omeprazole · · Synonym 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073