From shana; change, i.e. Repetition -- X angels.
see HEBREW shana
H8136. shinan
שִׁנְאָן noun [masculine] repetition (?); — שִׁנְאָ֑ן אַלְפֵי Psalm 68:18 thousands of repetition, i.e. thousands twice-told, Che; redoubled, Dr, i.e. thousands on thousands (Du, reading אֶלֶף, as שִׁנָּא with suffix removed them, treating בק מסיני אדני ׳שׁנאן as gloss).
שֵׁנָה see √יָשֵׁן. שֶׁנְהַבִּים see √שׁנן