What is half a parenthesis called?

There's no specific term for half a parenthesis. Parentheses are typically used in pairs to enclose a section of text, like this: ( ).

If you're seeing something that looks like a single parenthesis, it might be a typo or a symbol used for a different purpose in a specific context.

Could you provide more information about where you saw this "half parenthesis"? I might be able to help further if you can tell me:

* What kind of document or program were you looking at?

* What was the text surrounding the "half parenthesis"?

* What was the context of the symbol?