We found one dictionary that defines the word speed-length ratios:

General (1 matching dictionary)

1. speed-length ratios: Merriam-Webster

▸ Words similar to speed-length ratios ▸ Usage examples for speed-length ratios ▸ Idioms related to speed-length ratios ▸ Wikipedia articles (New!) ▸ Words that often appear near speed-length ratios ▸ Rhymes of speed-length ratios ▸ Invented words related to speed-length ratios