Definition of pentaquark in English:

pentaquark

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

Entry from US English dictionary

noun

Physics
A baryon consisting of four quarks and an antiquark.

Definition of pentaquark in:

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Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily