We found 14 dictionaries that define the word heart muscle:

General (9 matching dictionaries)

1. heart muscle: Vocabulary.com
2. heart-muscle: Wordnik
3. heart muscle: Dictionary.com
4. Heart muscle: Wikipedia, the Free Encyclopedia
5. heart muscle: Rhymezone
6. heart muscle: FreeDictionary.org
7. heart muscle: Mnemonic Dictionary
8. heart muscle: TheFreeDictionary.com
9. heart muscle: Wiktionary

Computing (1 matching dictionary)

10. heart muscle: Encyclopedia

Medicine (4 matching dictionaries)

11. Heart muscle, Muscle, heart: MedTerms.com Medical Dictionary
12. online medical dictionary (No longer online)
13. heart muscle: Medical dictionary
14. Heart muscle, Muscle, heart: Drug Medical Dictionary

(Note: See heart_muscles as well.)

Definitions from Wiktionary (heart muscle) ▸ noun:  Synonym of cardiac muscle Opposite: skeletal muscle, smooth muscle, voluntary muscle ▸ Words similar to heart muscle ▸ Usage examples for heart muscle ▸ Idioms related to heart muscle ▸ Wikipedia articles (New!) ▸ Words that often appear near heart muscle ▸ Rhymes of heart muscle ▸ Invented words related to heart muscle