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cardinal vowel

noun, Phonetics
1.
any one of eight primary, purportedly invariant, sustained vowel sounds that constitute a reference set for describing the vowel inventory of a language.
2.
any one of the eight or more supplementary or secondary cardinal vowels.
Origin
1920-1925
1920-25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Value for cardinal

11
14
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