ziemošana (Latvian) comes from Latvian ziemot, from Latvian ziema, from Proto-Balto-Slavic źeimā́ˀ, from Proto-Indo-European ǵʰéyōm, from Proto-Indo-European -ōm, from Proto-Indo-European -mi.
ziemošana (Latvian): wintering; verbal noun of ziemot