parenthesis (suomeksi)

sulkumerkki (s: kielitiede / yhteys / either of a pair of brackets ( ))
sulkeet (s: kielitiede / yhteys / monikossa / (mathematics, logic) brackets used to clarify expressions by grouping terms affected by a common operator)
parenteesi (s: kielitiede / a clause, phrase or word inserted into a passage which is already grammatically complete)