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pentaquark

Syllabification: pen·ta·quark
Pronunciation: /ˈpen(t)əˌkwärk/

Entry from US English dictionary

Definition of pentaquark in English:

noun

Physics
A baryon consisting of four quarks and an antiquark.

Definition of pentaquark in:

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Word of the day orthoepy
Pronunciation: ôrˈTHōəpē
noun
the correct or accepted pronunciation of words