Permeable by heat rays. ... Synonym: transcalent. ... Origin: G. Dia-thermaino, to heat through, fr. Thermos, hot ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
Di`a·ther'ma·nous adjective [ Greek ... to warm through; dia` through + ... to warm, ... warm.] Having the property of transmitting radiant heat; diathermal; -- opposed to athermanous . Found on http://www.encyclo.co.uk/webster/D/59
diathermanous 1. Having the property of freely transmitting radiant heat. 2. A description of a substance or a space that allows the passage of heat; especially, one that is highly conductive to heat. Found on http://www.wordinfo.info/words/index/info/view_unit/4265/4