amphibious operation amphibiousness • amphibious vehicle · · · Info · Definitions · Characters · · amphibious operation · · Text Common · · Latin · · Scripts 20 · · Length 8 · · Syllables Definitions · · · (noun) a military operation by both land and sea forces. Synonyms: amphibious operation. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E 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 t latin small letter t U+0074 u latin small letter u U+0075