Engineering Abbreviations
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

'Ma' to 'Md', 'Me' to 'Ml', 'Mm' to 'Mz'

m - meter [3.281 feet]
M - material dispersion coefficient
M - mega, (106)
MAC - medium access control [sublayer]
MAC - Message Authentication Code
MAN - metropolitan area network
MAP - manufacturers' automation protocol
maser - microwave amplification by stimulated emission of radiation
MAT - Microwave Annealing Treatment
MAU - Medium Access Control
Mb - Mega-Bit [1024 x 1024 bits]
MB - MegaByte [1024 x 1024 bytes]
MBB - Make Before Break
MBB - Moisture Barrier Bag
MBps - MegaByte per second
MAU - Medium Access Unit
MC - Master Clock
MCA - Micro Channel Architecture [PC Bus]
MCA - Multichip Assembly
MCC - maintenance control circuit
MCEB - Military Communications-Electronics Board
MCM - Multi-Chip Module [MCM Packaging]
MCM - multicarrier modulation
MCP - Media and Communications Processor
MCP - Memory Chip Package [Memory]
MCS - Master Control System
MCU - MicroComputer Unit CPU Vendors
MCW - modulated continuous wave
MCXO - microcomputer compensated crystal oscillator
MDI - Medium Dependent Interface
MDF - main distribution frame
MDIO - Management Data Input/Output [IEEE802.3, MDIO Interface]
MDT - Mean Down Time

PC motherboard

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