We found 8 dictionaries that define the word reflex arcs:

General (5 matching dictionaries)

1. reflex arcs: Merriam-Webster
2. reflex arcs: Collins English Dictionary
3. reflex arcs: Vocabulary.com
4. reflex arcs: Wiktionary
5. Reflex arcs: TheFreeDictionary.com

Computing (1 matching dictionary)

6. Reflex arcs: Encyclopedia

Medicine (2 matching dictionaries)

7. reflex arcs: Merriam-Webster Medical Dictionary
8. Reflex arcs: Medical dictionary

(Note: See reflex_arc as well.)

Definitions from Wiktionary (reflex arc) ▸ noun:  (neuroanatomy, neurophysiology) The neural pathway that mediates a reflex. ▸ Also see reflex_arc ▸ Words similar to reflex arcs ▸ Usage examples for reflex arcs ▸ Idioms related to reflex arcs ▸ Wikipedia articles (New!) ▸ Words that often appear near reflex arcs ▸ Rhymes of reflex arcs ▸ Invented words related to reflex arcs