|Origin:||Greek, from parentithenai 'to put in'|
pa‧ren‧the‧sis plural parentheses [countable usually plural]
a round bracket
The figures in parentheses refer to page numbers.
2 British English in parentheses American English
if you say something in parenthesis, you say it while you are talking about something else in order to add information or explain something:
In parenthesis, I should add that the results have not yet been proven.