sesamoid sesame • sesamoidal · · · Info · Definitions · Synonyms · Characters · · sesamoid · · Text Latin · · Script 8 · · Length Definitions · · · (noun) any of several small round bones formed in a tendon where it passes over a joint. Synonyms: sesamoid bone, os sesamoideum. · · Noun Definition 1 Synonyms · · · sesamoid bone · · Synonym 1 os sesamoideum · · Synonym 2 Characters · · a latin small letter a U+0061 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 o latin small letter o U+006F s latin small letter s U+0073