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[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 OO,
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.
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; namename.
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 linguistic origins
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(computer science)




Early system on Ferranti Mercury. Listed in CACM 2(5):16 (May 1959).




(1) For Apple's Mac computer, see Macintosh.

(2) For the built-in hardware ID, see MAC address.

(3) For the network protocol layer, see MAC layer.

(4) See moves-adds-changes and mandatory access control.

(5) (Multiplexed Analog Components) A video format that was analog video and digital audio. See HD analog formats.

(6) (Mission Assurance Category) See DOD cyberspace glossary.

(7) (Medicare Administrative Contractor) See healthcare IT.

(8) (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, DES and AES.
References in periodicals archive ?
She added that the Crown could neither "confirm or dispute" the Macks' account of what happened.
Both Mack Anthem models feature the Mack MP8HE engine with Mack Energy Recovery Technology, which captures otherwise wasted heat from the exhaust and converts it into mechanical energy fed back into the crankshaft.
Judith Middleton, consultant solicitor and head of department, commented "I am delighted that since transferring to Macks last year I have been joined firstly by Gillian Charnock-Neal and now by Amanda.
The company adds the complete line of Mack product to its existing Hitachi, Atlas Copco, Volvo and Ingersoll Rand lines of construction machinery.
Stephen Mack, 53, teamed up with nephew Jackson Mack, 21, to brutally attack Stephen Anderson last October.
Mack made the announcement during The Work Truck Show March 6 at the Indiana Convention Center, Indianapolis.
Developed with Sears Seating, the new seat was designed and engineered specifically for the Mack LR model.
Load Logic must be specd in conjunction with Macks efficiency-focused Super Econodyne package and provides up to an additional 1 percent improvement in fuel efficiency on top of Super Econodynes up to 4 percent improvement.
Mack Trucks today introduced its new, next-generation highway hero, the Mack Anthem.
Mack Trucks announced today that it certified its 100th dealer location as a Mack Certified Uptime Center an accreditation signifying the dealer has met stringent requirements to better improve service and help keep customers trucks up and running.
Macks industry leading approach to uptime support is managed through the Mack Uptime Center.
Mack Omnitracs Integrated Telematics makes use of Macks fully integrated GuardDog Connect telematics hardware for capturing and relaying information like relative road speed and idling duration and cost.