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petawatt Syllabification: pet·a·watt
Pronunciation: /ˈpedəˌwät/

Entry from US English dictionary

Definition of petawatt in English:

noun

A quadrillion (1015) watts: each year warm-core eddies shed southward the equivalent of about 0.3 petawatt of power

Definition of petawatt in:

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Pronunciation: fôrˈtisəˌmō
adverb
(especially as a direction) very loud or loudly