We found 12 dictionaries that define the word hydrometers:

General (7 matching dictionaries)

1. hydrometers: Merriam-Webster
2. hydrometers: Collins English Dictionary
3. hydrometers: Vocabulary.com
4. hydrometers: Cambridge Advanced Learner's Dictionary
5. hydrometers: Wiktionary
6. hydrometers: Dictionary.com
7. hydrometers: TheFreeDictionary.com

Business (1 matching dictionary)

8. hydrometers: Legal dictionary

Computing (1 matching dictionary)

9. hydrometers: Encyclopedia

Medicine (2 matching dictionaries)

10. hydrometers: Merriam-Webster Medical Dictionary
11. hydrometers: Medical dictionary

Science (1 matching dictionary)

12. Agricultural Thesaurus and Glossary (No longer online)

(Note: See hydrometer as well.)

Definitions from Wiktionary (hydrometer) ▸ noun:  An instrument that floats in a liquid and measures its specific gravity on a scale. ▸ Also see hydrometer ▸ Words similar to hydrometers ▸ Usage examples for hydrometers ▸ Idioms related to hydrometers ▸ Wikipedia articles (New!) ▸ Popular adjectives describing hydrometers ▸ Words that often appear near hydrometers ▸ Rhymes of hydrometers ▸ Invented words related to hydrometers