Find definitions for over 300,000 words from the most authoritative English dictionary. Continuously updated with new words and meanings.

K definition: a vector on the z-axis, having length 1 unit. See examples of k used in a sentence.

K, or k, is the eleventh letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide.

K is the eleventh letter of the English alphabet. 2. K or k is used as an abbreviation for words beginning with k, such as ' kilometre ', 'kilobyte', or 'king'.

K, k (keɪ) n., pl. Ks K's, ks k's. 1. the 11th letter of the English alphabet, a consonant. 2. any spoken sound represented by this letter.

Definition of K noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

K definition: The 11th letter of the modern English alphabet.

K, k (kā), n., pl. K's or Ks, k's or ks. the eleventh letter of the English alphabet, a consonant. any sound represented by the letter K or k, as in bilk, kit, or sick. something having the shape of a K. a written or …

Feb 26, 2026 · k (lower case, upper case K, plural ks or k's) The eleventh numeral symbol of the English alphabet, called kay and written in the Latin script.

"K" is the eleventh letter of the modern English alphabet and the ISO basic Latin alphabet. It is also used as a symbol, abbreviation or variable in various disciplines including mathematics, science, computer …