Entry 1 sense Webster, 1913 Climatologist /klĭmˌ-ət-äl'-əj-ĭst/ · Cli·ma·tol·o·gist · IPA /klˌɪmətˈɑlədʒɪst/ 01 n. One versed in, or who studies, climatology. 1. One versed in, or who studies, climatology.