восьмидесятилетие
octoginta anni; (jubilaeum)
санаторий
sanatorium [ii, n];
ручеек, ручей
rivulus [i, m];
hypothesis [e]os / is f (Gr), opinatio [onis, f], opinio [onis, f], propositum [i, n], positio [onis, f], conjectura [ae, f]; conjectio [onis, f];