Word Pronunciation & Dictionary

rapidity

/ɹəˈpɪd.ɪ.ti/

Word Rarity Very rare

Frequency: Zipf frequency 2.37 in modern English

Syllables
ra-pid-i-ty
IPA
/ɹəˈpɪd.ɪ.ti/
14
Scrabble Score
8
Letters
4
Syllables
7
Unique Chars

Meaning

noun

speed, swiftness; the condition of being rapid

Countable; Uncountable

noun

A measure of velocity relative to the speed of light; defined as artanh(v), where artanh is the hyperbolic arctangent, and v = speed (with c = speed of light = 1).

Countable; Uncountable

noun

A measure of the velocity of a particle in a beam relative to the beam's axis

Countable; Uncountable

Example Sentences

Etymology

From rapid + -ity, from French rapidité, from Latin rapiditas.

Origin

Word Breakdown

Usage

Inflected Forms

Derived Forms

Synonyms

Rhymes With

Questions

How do you pronounce rapidity?
The recorded pronunciation is /ɹəˈpɪd.ɪ.ti/.
What does rapidity mean?
speed, swiftness; the condition of being rapid
Where does rapidity come from?
It is traced to French.

How to pronounce rapidity

  1. Open the pronunciation page — Open the Speakur entry for “rapidity”.
  2. Read the phonetic spelling — Read the IPA spelling (/ɹəˈpɪd.ɪ.ti/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “rapidity”.
  4. Repeat and practice — Say “rapidity” aloud, matching stress and vowels until it feels natural.