Is there a way to add terms for the Spell Checker in editor to reference? There are unique terms related to the industry that the spell checker might flag as incorrect.

We are looking for a solution for the client team to add the unique terms so they are not flagged as incorrect when spelt correctly and suggest this term for when it is spelt incorrectly.

Please help.
Checkout the following modules:

Wysiwyg SpellCheck 


  Wysiwyg SpellCheck module is a plugin for wysiwyg editor that enables TinyMCE spellchecker plugin.


Spell Checker


  This module supports spell checking of node content (including title, body and CCK fields).


Image from project page.