[ ruh-pid-i-tee ]
/ rəˈpɪd ɪ ti /


a rapid state or quality; quickness; celerity.

Nearby words

  1. rapid plasma reagin test,
  2. rapid transit,
  3. rapid transit chess,
  4. rapid-fire,
  5. rapidan,
  6. rapidly,
  7. rapidly advancing juvenile periodontitis,
  8. rapidness,
  9. rapido,
  10. rapids

Also rap·id·ness [rap-id-nis] /ˈræp ɪd nɪs/.

Origin of rapidity

From the Latin word rapiditās, dating back to 1610–20. See rapid, -ity

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rapidity

Word Origin and History for rapidity



1650s, from French rapidité and directly from Latin rapiditatem (nominative rapiditas) "swiftness, rapidity, velocity," from rapidus "hasty, swift, rapid" (see rapid).

Online Etymology Dictionary, © 2010 Douglas Harper