serenum
From LSJ
δόξειε δ' ἂν τῆς κυριωτάτης καὶ μάλιστα ἀρχιτεκτονικῆς. τοιαύτη δ' ἡ πολιτικὴ φαίνεται → It would seem to belong to the most authoritative art and that which is most truly the master art. And politics appears to be of this nature.
Latin > English
serenum sereni N N :: fair weather
Latin > French (Gaffiot 2016)
sĕrēnum,¹² ī, n. (serenus), temps serein : sereno Liv. 31, 12, 5, par un temps serein, cf. Liv. 37, 3, 2 ; Sen. Nat. 2, 18 || pl. serena Virg. G. 1, 393, temps serein ; serena cæli Lucr. 2, 1100, les espaces sereins du ciel.
Latin > Chinese
serenum, i. n. :: 晴天