קִיוּוּיָה, (קָוָה Hif.) addition to the capacity of a bath, increase. Y. Ter. IV, 43ᵃ bot. שני מקוות … רצה להוציא ק׳ פסולה וכ׳ if there are two connected baths each containing twenty S’ah, and three Log of water (in vessels) fell into one of them, and it is unknown into which, you may take the illegitimate addition out of the one or the other, as you may desire &c. Ib.ᵇ top אמר מה שלמטן ק׳ כשירה וכ׳ one may say, what is in the lower tank is a legitimate increase, and what is in the upper, is illegitimate &c. (v. Tosef. Mikv. III, 6).