Speakur

Word Pronunciation & Dictionary

petawatt-hour

Word Rarity Very rare

Frequency: Zipf frequency 0.00 in modern English

Syllables
petawat-t-hour
IPA
20
Scrabble Score
12
Letters
3
Syllables
9
Unique Chars

Meaning

noun

A unit of energy equal to that provided by one petawatt of power acting for one hour (3·6 × 10¹⁸ joules).

Example Sentences

  • "Holonym: terawatt-year (31.536e18 J)"
  • "Meronyms: kilojoule (1.000e3 J) < watt-hour (3.600e3 J) < milliwatt-year (31.536e3 J) < megajoule (1.000e6 J) < kilowatt-hour (3.600e6 J) < watt-year (31.536e6 J) < gigajoule (1.000e9 J) < megawatt-hour (3.600e9 J) < kilowatt-year (31.536e9 J) < terajoule (1.000e12 J) < gigawatt-hour (3.600e12 J) < megawatt-year (31.536e12 J) < petajoule (1.000e15 J) < terawatt-hour (3.600e15 J) < gigawatt-year (31.536e15 J) < exajoule (1.000e18 J)"

Etymology

By surface analysis, petawatt + hour, or, by surface analysis, peta- + watt-hour.

Inflected Forms

petawatt-hours (plural)

Frequently Paired Words

mul:PW·h mul:PW h mul:PWh mul:PW-h mul:PW·hr mul:PW hr mul:PWhr mul:PW-hr

Questions

What does petawatt-hour mean?
A unit of energy equal to that provided by one petawatt of power acting for one hour (3·6 × 10¹⁸ joules).
Where does petawatt-hour come from?
By surface analysis, petawatt + hour, or, by surface analysis, peta- + watt-hour.

How to pronounce petawatt-hour

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