Entry 2 senses · 2 variants Webster, 1913 Imposthume · Im·post·hume · IPA n. v. t. & i. 01 n. A collection of pus or purulent matter in any part of an animal body; an abscess. 1. A collection of pus or purulent matter in any part of an animal body; an abscess. 02 v. t. & i. Same as Imposthumate. 1. Same as Imposthumate. See: Imposthumate