We found 3 dictionaries that define the word be firing on all cylinders:

General (2 matching dictionaries)

1. be firing on all cylinders: Cambridge Advanced Learner's Dictionary
2. be firing on all cylinders: Longman Dictionary of Contemporary English

Miscellaneous (1 matching dictionary)

3. be firing on all cylinders: Idioms

▸ Words similar to be firing on all cylinders ▸ Usage examples for be firing on all cylinders ▸ Idioms related to be firing on all cylinders ▸ Wikipedia articles (New!) ▸ Words that often appear near be firing on all cylinders ▸ Rhymes of be firing on all cylinders ▸ Invented words related to be firing on all cylinders