Nak (disambiguation)

Nak and similar can mean:

• NAK is the negative-acknowledge character on computers and telecommunications, ascii 21 (= hexadecimal 0x15)
• NAK (protocol message) (or NACK) is a computer communication protocol message sent to reject or indicate a problem with a previously-received message
• "NAK" is used as a slang abbreviation in internet forums and chats (mainly technology) for "I don't agree" or "That's wrong"
• NaK is an alloy of sodium and potassium
• In cryptozoology, Nak is another name for the Phaya Naga
• "Nack" is another name for the weasel Fang the Sniper in the Sonic the Hedgehog game
• Nack is a municipality in Alzey-Worms district, Rhineland-Palatinate, Germany
• A female Yak is a "Nak".

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