We found 9 dictionaries that define the word identification number:

General (7 matching dictionaries)

1. identification number: Vocabulary.com
2. identification number: Dictionary.com
3. Identification number: Wikipedia, the Free Encyclopedia
4. identification number: Rhymezone
5. identification number: FreeDictionary.org
6. identification number: Mnemonic Dictionary
7. identification number: TheFreeDictionary.com

Computing (1 matching dictionary)

8. identification number: Encyclopedia

Tech (1 matching dictionary)

9. AUTOMOTIVE TERMS (No longer online)

(Note: See identification_numbers as well.)

Definitions from WordNet (identification number) ▸ noun:  a numeral or string of numerals that is used for identification Phrases: personal identification number, bank identification number, Taxpayer Identification Number, Employer Identification Number, tax identification number, more... ▸ Words similar to identification number ▸ Usage examples for identification number ▸ Idioms related to identification number ▸ Wikipedia articles (New!) ▸ Words that often appear near identification number ▸ Rhymes of identification number ▸ Invented words related to identification number