We found 2 dictionaries that define the word atomic reactors:

General (2 matching dictionaries)

1. atomic reactors: Collins English Dictionary
2. atomic reactors: Vocabulary.com

(Note: See atomic_reactor as well.)

Definitions from Wiktionary (atomic reactor) ▸ noun:  Synonym of nuclear reactor ▸ Also see atomic_reactor ▸ Words similar to atomic reactors ▸ Usage examples for atomic reactors ▸ Idioms related to atomic reactors ▸ Wikipedia articles (New!) ▸ Words that often appear near atomic reactors ▸ Rhymes of atomic reactors ▸ Invented words related to atomic reactors