cubic inch cubic foot • cubicity · · · Info · Definitions · Synonyms · Characters · · cubic inch · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) the volume equal to a cube one inch on each side. Synonyms: cubic inch, cu in. · · Noun Definition 1 Synonyms · · · cu in · · Synonym 1 Characters · · space U+0020 b latin small letter b U+0062 c latin small letter c U+0063 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E u latin small letter u U+0075