Is it close paren, closed paren, or closing paren?

Question

What are the correct terms for ( and ) in Lisp?

• open paren
• opening paren
• closing paren
• closed paren
• close paren

Are they all accepted terms?

Answer 1

The Common Lisp Hyperspec calls them:

SP06 ( left parenthesis, or open parenthesis
SP07 ) right parenthesis, or close parenthesis