We don't have synonyms for codepoint yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are code point, chokepoint and forepoint.
(n) :
Alternative spelling of code point. [(computing, especially Unicode) A numerical offset in a character set, etc., as opposed to a displayed grapheme or character, which can be composed of several code points.]
(n) :
Alternative spelling of code point. [(computing, especially Unicode) A numerical offset in a character set, etc., as opposed to a displayed grapheme or character, which can be composed of several code points.]