We found 5 dictionaries that define the word not a number:

General (1 matching dictionary)

1. Not-a-Number: Dictionary.com

Computing (2 matching dictionaries)

2. Not-a-Number: Free On-line Dictionary of Computing
3. Not-a-Number, Not a Number: Encyclopedia

Medicine (1 matching dictionary)

4. online medical dictionary (No longer online)

Science (1 matching dictionary)

5. not a number: PlanetMath Encyclopedia

▸ Words similar to not a number ▸ Usage examples for not a number ▸ Idioms related to not a number ▸ Wikipedia articles (New!) ▸ Words that often appear near not a number ▸ Rhymes of not a number ▸ Invented words related to not a number