Parenthesis

вво́дное сло́во

vvódnoje slóvo

(a clause, phrase or word inserted into a passage which is already grammatically complete)

кру́глая ско́бка

krúglaja skóbka

(either of a pair of brackets ( ))

отклоне́ние

otklonénije

((Rhetoric) a digression; the use of such digressions)

отступле́ние

otstuplénije

((Rhetoric) a digression; the use of such digressions)

ско́бка

skóbka

(either of a pair of brackets ( ))

ско́бки

skóbki

(both round brackets)