We found 7 dictionaries that define the word mass unit:

General (7 matching dictionaries)

1. mass unit: Merriam-Webster
2. mass unit: Vocabulary.com
3. mass unit: Dictionary.com
4. mass unit: Rhymezone
5. mass unit: FreeDictionary.org
6. mass unit: Mnemonic Dictionary
7. mass unit: TheFreeDictionary.com

(Note: See mass_units as well.)

Definitions from WordNet (mass unit) ▸ noun:  a unit of measurement for mass Phrases: atomic mass unit, unified atomic mass unit, atomic mass unit (amu), more... ▸ Words similar to mass unit ▸ Usage examples for mass unit ▸ Idioms related to mass unit ▸ Wikipedia articles (New!) ▸ Words that often appear near mass unit ▸ Rhymes of mass unit ▸ Invented words related to mass unit