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Y, or y, is the twenty-fifth and penultimate letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide.

Word origin C14: from Scottish -ie, -y, familiar suffix occurring originally in names, as in Jamie (James)

Y meaning: 1 : the 25th letter of the English alphabet; 2 : used to represent especially a second unknown quantity

/waɪ/ /waɪ/ IPA guide Definitions of y noun the 25th letter of the Roman alphabet synonyms: Y, wye

The latin letter y is used to represent a variable or coefficient. Most commonly, y is the vertical dimension in the 2D cartesian coordinate system.

y, the twenty-fifth letter of the English alphabet, at the beginning of a word or syllable, except when a prefix (see Y-), is usually a fricative vocal consonant; as a prefix, and usually in the middle or at the …