phase in phase iii clinical trial • phase iv · · · Info · Definitions · Antonyms · Characters · · phase in · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (verb) introduce gradually. Synonyms: phase in. · · Verb Definition 1 Antonyms · · · phase out · · Antonym 0 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E p latin small letter p U+0070 s latin small letter s U+0073