Definitions from Wiktionary (K)

▸ noun:  (computing) A kilobyte (more formally KB or kB).
▸ noun:  (computing) A kilobit (more formally kb), especially in measuring Internet connection.
▸ noun:  (colloquial) kilometre or kilometres.
▸ noun:  (colloquial) thousand or thousands.
▸ noun:  The SI measurement value of 1,000
▸ noun:  (computing) A single character message used as an acknowledgement (ACK), meaning "previous message received and understood."
▸ noun:  (law, informal) Abbreviation of contract. [An agreement between two or more parties, to perform a specific job or work order, often temporary or of fixed duration and usually governed by a written agreement.]
▸ noun:  (education, US) Abbreviation of kindergarten. [(Canada, US, Australia) An educational institution for young children, usually between ages 4 and 6; nursery school.]
▸ noun:  (often computing) Abbreviation of kilo-, 1,024.
▸ noun:  (Morse code) Abbreviation of go ahead, over, an indication that a message is complete and a reply is awaited.
▸ noun:  (baseball) Abbreviation of strikeout. On a baseball scorecard, a frontwards K signifies striking out while swinging the bat, while a backwards K signifies striking out while looking.
▸ noun:  (card games, chess) Abbreviation of king. [A male monarch; a man who heads a monarchy; in an absolute monarchy, the supreme ruler of his nation.]
▸ noun:  (biology) Abbreviation of carrying capacity. [(transport) The number of people or things that a vehicle is designed to carry.]
▸ noun:  (geology) Abbreviation of Cretaceous. [(geology) The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 66 million years ago.]
▸ noun:  (knitting) Abbreviation of knit. [A knitted garment.]
▸ noun:  (slang) Abbreviation of ketamine (a drug). [(pharmacology) A synthetic compound used as an anesthetic and analgesic drug and also (illicitly) as a hallucinogen.]
▸ noun:  (music) Abbreviation of Köchel number. [A number assigned to each work composed by Wolfgang Amadeus Mozart.]
▸ noun:  (UK, government) Abbreviation of Knighthood.
▸ noun:  (economics) Abbreviation of capital. [(uncountable, economics) Already-produced durable goods available for use as a factor of production, such as steam shovels (equipment) and office buildings (structures).]
▸ noun:  (printing) Abbreviation of black. [(countable and uncountable) The colour/color perceived in the absence of light, but also when no light is reflected, but rather absorbed.]
▸ noun:  (slang, from Jamaican Creole) Abbreviation of Kalashnikov. [A particular model of Russian assault rifle.]
▸ noun:  Abbreviation of kritik. [In formal debating, an argument that challenges a certain mindset or assumption made by the opposing team, often from the perspective of critical theory, rather than dealing directly with the topic under debate.]

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