ˌintə(r)ˈmēdēəm noun
( plural interme·dia -dēə ; or intermediums )
Etymology: Late Latin, from Latin, neuter of intermedius intermediate — more at intermediate
1. obsolete : an intermediate space or time : interval
2. : a musical or dance interlude
3. : an intervening agent : intermediary , medium
4. : a bone or cartilage situated between the radiale and ulnare in the carpus and between the tibiale and fibulare in the tarsus in many vertebrates