We found 4 dictionaries that define the word antagonistic muscles:

General (2 matching dictionaries)

1. antagonistic muscles: Vocabulary.com
2. antagonistic muscles: Dictionary.com

Medicine (2 matching dictionaries)

3. online medical dictionary (No longer online)
4. antagonistic muscles: Medical dictionary

(Note: See antagonistic_muscle as well.)

Definitions from WordNet (antagonistic muscle) ▸ noun:  (physiology) a muscle that opposes the action of another ("The biceps and triceps are antagonistic muscles") ▸ Also see antagonistic_muscle ▸ Words similar to antagonistic muscles ▸ Usage examples for antagonistic muscles ▸ Idioms related to antagonistic muscles ▸ Wikipedia articles (New!) ▸ Words that often appear near antagonistic muscles ▸ Rhymes of antagonistic muscles ▸ Invented words related to antagonistic muscles