1. (me′de-it)Situated between; intermediate. 2. (me′de-at)To effect something by means of an intermediary substance, as in complement-mediated phagocytosis. [L. mediatus, fr. medio, pp. -atus, to divide in the middle]
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me·di·ate 'mēd-ē-ət adj
1) occupying a middle position
2) acting through an intervening agency: exhibiting indirect causation, connection, or relation
me·di·ate 'mēd-ē-.āt vt, -at·ed; -at·ing to transmit or carry (as a physical process or effect) as an intermediate mechanism or agency
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me·di·ate (meґde-ət) indirect; accomplished by the aid of an intervening medium.Medical dictionary. 2011.