Inherited from Proto-Slavic *tysǫti, *tysęti, from Proto-Balto-Slavic *tūˀsantis, from Proto-Balto-Slavic *tuHsontis, from Proto-Indo-European *tuHsont-, *tuHsenti-. Cognate with Slovene tisoč, Czech tisíc, Polish tysiąc, Ukrainian тисяча (tysjača) and Russian тысяча (tysjača).
тѝсућа f (Latin spelling tìsuća)