parenthesis
noun /pəˈrenθəsɪs/
  /pəˈrenθəsɪs/
 (plural parentheses 
 /pəˈrenθəsiːz/
  /pəˈrenθəsiːz/
)- a word, sentence, etc. that is added to a speech or piece of writing, especially in order to give extra information. In writing, it is separated from the rest of the text using brackets, commas or dashes.
- in parenthesis I add, in parenthesis, that I doubt whether such a place exists.
 - I should say, in parenthesis, that these figures cannot always be trusted.
 
Oxford Collocations Dictionaryadjective- long
 
- in parenthesis
 
 - (formal or North American English) (British English bracket, round bracket)[usually plural] either of a pair of marks, ( ) placed around extra information in a piece of writing or part of a problem in mathematics
- in parentheses Irregular forms are given in parentheses.
 
Extra ExamplesTopics Languageb2- The numbers outside the parentheses are the sales figures.
 - The words in parentheses should be deleted.
 - The prices are given in parentheses.
 
Oxford Collocations Dictionaryverb + parentheses- enclose something in parentheses
 - give something in parentheses
 - put something in parentheses
 - …
 
- in parentheses
 - inside parentheses
 - within parentheses
 - …
 
 
Word Originmid 16th cent.: via late Latin from Greek, from parentithenai ‘put in beside’.