sesamoiditis

Etymology tree
English sesame
Ancient Greek -ο- (-o-)der.
Latin -o-
Proto-Indo-European *weyd-
Proto-Indo-European *-os
Proto-Indo-European *wéydos
Proto-Hellenic *wéidos
Ancient Greek εἶδος (eîdos)
Proto-Indo-European *-os
Proto-Indo-European *-ēs
Ancient Greek -ης (-ēs)
Ancient Greek -ειδής (-eidḗs)
Latin -oīdēslbor.
English -oid
English sesamoid
Proto-Indo-European *-tósder.
Ancient Greek -της (-tēs)der.
Ancient Greek -ῖτις (-îtis)lbor.
New Latin -itisder.
English -itis
English sesamoiditis
From sesamoid + -itis.