sesamoid bone sesamoidal • sesamoiditis · · · Info · Definitions · Synonyms · Characters · · sesamoid bone · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) any of several small round bones formed in a tendon where it passes over a joint. Synonyms: sesamoid bone, sesamoid, os sesamoideum. · · Noun Definition 1 Synonyms · · · sesamoid · · Synonym 1 os sesamoideum · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 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 s latin small letter s U+0073