intermedium
intermedium[ˌɪntəˈmiːdɪəm](pl. intermedia -ˈmiːdɪə)- (Zoology)(in tetrapods) a carpal in the centre of the wrist joint, or a tarsal in the centre of the ankle joint
(动)间介骨,中间跗骨
语源- late 16th cent. (denoting an intervening action or performance): from late Latin, neuter (used as a noun) of Latin intermedius 'intermediate'
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