Definition of proficiency in English:

proficiency

Line breaks: pro|fi¦ciency
Pronunciation: /prəˈfɪʃ(ə)nsi
 
/

noun

[mass noun]

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Definition of proficiency in:

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody