Noun
The word is derived from parenthesis
of Parenthesis
Source: Webster's dictionaryWe toast the Lisp programmer who pens his thoughts within nests of parentheses. Alan Perlis
I hold that the parentheses are by far the most important parts of a non-business letter. D. H. Lawrence
If you can't hear me, it's because I'm in parentheses. Steven Wright
They looked at each other like a pair of parentheses. Daniel Handler
What is hardest to accept about the passage of time is that the people who once mattered the most to us wind up in parentheses. John Irving
Course, that doesn't work when 'a' contains parentheses. Larry Wall