English sternocleidomastoid

← English sterno- (affix)

← English cleido- (affix)

← English mastoid (affix)

← Proto-Indo-European *(s)kleh₂w- (root)

← Proto-Indo-European *sterh₃- (root)

← Latin sternum (affix)

← Latin κλείς (affix)

← Latin mastoīdēs (affix)