Webster's 1828 Dictionary
INTERMEDIUM
n.Intermediate space. 1. An intervening agent.
Webster's 1913 Dictionary
INTERMEDIUM
In `ter *me "di *um, n.; pl. Intermediums, L. Intermedia. Etym: [NL. ,neut. of L. intermedius intermediate. ]
1. Intermediate space. [R.]
2. An intervening agent or instrument. Cowper.
3. (Anat. )
Defn: The bone or cartilage between the radiale and ulnare in the carpus, and between the tibiale and fibulare in the tarsus. It corresponds to the lunar in the carpus, and to a part of the astragalus in the tarsus of man and most mammals.
New American Oxford Dictionary
intermedium
in ter me di um |ˌintərˈmēdēəm ˌɪntərˈmidiəm | ▶noun ( pl. intermedia |-dēə | ) Zoology (in tetrapods ) a carpal in the center of the wrist joint, or a tarsal in the center of the ankle joint. ORIGIN late 16th cent. (denoting an intervening action or performance ): from late Latin, neuter (used as a noun ) of Latin intermedius ‘intermediate. ’
Oxford Dictionary
intermedium
intermedium |ˌɪntəˈmiːdɪəm | ▶noun ( 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. ORIGIN late 16th cent. (denoting an intervening action or performance ): from late Latin, neuter (used as a noun ) of Latin intermedius ‘intermediate ’.
Duden Dictionary
Intermedium
In ter me di um Substantiv, Neutrum , das Intermedio |Interm e dium |das Intermedium; Genitiv: des Intermediums, Plural: die Intermedien lateinisch kleines musikalisches Zwischenspiel ursprünglich zur Erheiterung des Publikums bei Schauspielaufführungen, bei Fürstenhochzeiten o. Ä. Ende des 16. Jahrhunderts
The Wordsmith Dictionary