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Operator , op·er·a·tor / ˈäpəˌrātər/ • n. 1. a person who operates equipment or a machine: a radio operator. ∎ (usu. the operator) a person who works for a tele… Operation , operation 1. A function from Sm (see Cartesian product) into S itself, where S is some set specific to the function. Such a function is usually refer… Vitamin K , Description Vitamin K originates from the German term koajulation. It is also known as antihemorrhagic factor and is one of the four fat-soluble vita… K , K, k [Called ‘kay’, rhyming with say]. The 11th LETTER of the Roman ALPHABET as used for English. It originated in the Phoenician consonant kap, whic… Coccus , coc·cus / ˈkäkəs/ • n. (pl. coc·ci / ˈkäkˌ(s)ī; ˈkäkˌ(s)ē/ ) Biol. any spherical or roughly spherical bacterium. DERIVATIVES: coc·cal / ˈkäkəl/ adj.… cocker spaniel , cock·er span·iel / ˈkäkər/ (also cock·er) • n. a small spaniel of a breed with a silky coat.
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