Entry 1 sense Webster, 1913 Infrigidation · In·frig·i·da·tion · IPA /ɪnˌfɹɪd͡ʒɪˈdeɪʃən/ 01 n. The act of chilling or causing to become cold; a chilling; coldness; congelation. 1. The act of chilling or causing to become cold; a chilling; coldness; congelation.[Obs.]