Sorry, the term optional is not in the dictionary. Check the spelling and try removing suffixes like "-ing" and "-s".
Why is this definition missing?
Nearby terms:
optimising compiler ♦ optimism ♦ optimize ♦ option ♦ OPTRAN ♦ Opus ♦ OR ♦ Oracle ♦ Oracle 7
Try this search on Wikipedia, Wiktionary, Google, OneLook.
Loading