From Proto-Balto-Slavic *deśimt, from Proto-Indo-European *déḱm̥t (“ten”) with a suffix -(t)i-s marking collective number (“group of ten”). The Proto-Indo-European form is itself complex, including an element *ḱm̥t, possibly from *ḱomt (“hand”) (> German Hand, Dutch, English hand), in which case *de-ḱm̥t would mean originally “two hands”. Cognates include Latvian desmit, Old Prussian dessimpts ([desimts]), Old Church Slavonic дєсѧть (desętĭ), Russian, Ukrainian десять (désjat'), Belarusian дзесяць (dzésjac'), Bulgarian десет (déset), Czech deset, Polish dziesięć, Gothic 𐍄𐌰𐌹𐌷𐌿𐌽 (taihun), Old Norse tiund, Old High German zëhan, German zehn, English ten, Sanskrit दश (dáśa), Ancient Greek δέκα (déka), Latin decem.
dẽšimt m, f (not declinable)
- (cardinal) ten