The Free On-line Dictionary of Computing (30 December 2018):

right parenthesis
)
close parenthesis

    ")".  ASCII character 41.

   Common names: right paren; right parenthesis; right; close;
   thesis ("(" = paren); close paren; close parenthesis; right
   parenthesis; right banana.  Rare: already ("(" = so); rparen;
   ITU-T: closing parenthesis; close round bracket, right round
   bracket, INTERCAL: wane ("(" = wax); unparenthisey ("(" =
   parenthisey); right ear.

   Paired with left parenthesis.

   (1995-03-06)