We found 8 dictionaries that define the word IDFA:

General (3 matching dictionaries)

1. IDFA: Dictionary.com
2. IDFA: Wikipedia, the Free Encyclopedia
3. IDFA: Wiktionary

Business (1 matching dictionary)

4. IDFA: Investopedia

Miscellaneous (2 matching dictionaries)

5. IDFA: Acronym Finder
6. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

7. IDFA: Urban Dictionary

Tech (1 matching dictionary)

8. Glossary of Agricultural Terms, Programs and Laws (No longer online)

Definitions from Wiktionary (IDFA) ▸ noun:  (marketing) Initialism of identifier for advertisers. ▸ Words similar to IDFA ▸ Usage examples for IDFA ▸ Idioms related to IDFA ▸ Wikipedia articles (New!) ▸ Popular adjectives describing IDFA ▸ Words that often appear near IDFA ▸ Rhymes of IDFA ▸ Invented words related to IDFA