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Mac

   Also found in: Dictionary/thesaurus, Medical, Financial, Acronyms, Wikipedia, Hutchinson 0.04 sec.
Mac, Mc, or M' [Irish,=son], element in names derived from Irish and Scottish Gaelic patronymics. In most of these names the second element was a forename (e.g., Macdonald, in various spellings). Other names included titles or epithets (e.g., McIntosh [son of the chief]). Notions that some forms of the prefix are more typically Scottish or Irish are fallacious. Some of the names, however, have typical local distribution; thus, McLeod is Hebridean, McSweeney is especially Irish. See O O, 15th letter of the alphabet . It is a usual symbol for a mid-back, rounded vowel, rather like the first part of oi. Such a vowel was represented by omicron [Gr.,=little o], its formal and positional correspondent in the Greek alphabet.
..... Click the link for more information. ; name name. Personal identifying names are found in every known culture, and they often pass from one language to another. Hence the occurrence of Native American place names throughout the United States and the occurrence among American families of names of various
..... Click the link for more information. .

(1) See Macintosh, MAC layer, MAC address, moves-adds-changes and mandatory access control.

(2) (Message Authentication Code) A number computed from the contents of a text message that is used to prove the integrity of a message. The MAC is a checksum that is computed using an algorithm based on the DES or AES ciphers, which use a secret key. The MAC is then sent with the message. The recipient recomputes the MAC at the other end using the same algorithm and secret key and compares it to the one that is sent. If they are the same, it is assumed that the message has not been tampered with.

A MAC is like a digital signature, except that a secret key is used rather than a private key. Also known as the U.S. Government Standard Data Authentication Code (FIPS PUB 113). See digital signature, cryptography and DES.

1.MAC - Media Access Control.
2.MAC - Early system on Ferranti Mercury. Listed in CACM 2(5):16 (May 1959).
3.Mac - Macintosh
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Archie and Charlie, evidently great cronies, were pacing up and down, shoulder to shoulder, whistling "Bonnie Dundee"; Mac was reading in a corner, with his book close to his near-sighted eyes; Dandy was arranging his hair before the oval glass in the hat-stand; Geordie and Will investigating the internal economy of the moon-faced clock; and Jamie lay kicking up his heels on the mat at the foot of the stairs, bent on demanding his sweeties the instant Rose appeared.
Eight Cousins by Alcott, Louisa May View in context
I have often heard George Mac Turk, Lord Bajazet's eldest son, say that if he had his will when he came to the title, he would do what the sultans do, and clear the estate by chopping off all his younger brothers' heads at once; and so the case is, more or less, with them all.
Vanity Fair by Thackeray, William Makepeace View in context
But I've not the smallest doubt that Mac was watching both ship and station till the last moment.
The Amateur Cracksman by Hornung, E. W. View in context
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