sonic depth finder sonic delay line • soniferous · · · Info · Definitions · Synonyms · Characters · · sonic depth finder · · Text Common · · Latin · · Scripts 18 · · Length 5 · · Syllables Definitions · · · (noun) depth finder for determining depth of water or a submerged object by means of ultrasound waves. Synonyms: sonic depth finder, fathometer. · · Noun Definition 1 Synonyms · · · fathometer · · Synonym 1 Characters · · space U+0020 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 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