pa·ren·the·sis 
/pəˈrɛnθəsəs/ noun
plural pa·ren·the·ses /pəˈrɛnθəsəs/ noun /-θəˌsi:z/ [count] : one of a pair of marks ( ) that are used around a word, phrase, sentence, number, etc. — usually plural ▪ The plant's common name is followed by its Latin name in parentheses. —called also (Brit) bracket
