- mason
- masonry
- masonry block
- masonry cement
- masonry chimney
- masonry dam
- masonry lime
- masonry mortar
- masonry pier
- masonry sand
- masonry strength
- masonry structures
- masonry wall
- masonry weir
- mass breaking
- mass concrete
- mass data
- mass humidity
- mass premixing
- mass runoff
- mass storage
- mass transfer
- mast
- mast body
- mast crane
- mastaba
- master
- mangle
- manhole
- manometer pressure
- mansard roof
- mantissa
- manual work
- manually operated
- manufacturing industry
- manure conduit
- marble paper
- marble sand
- marbling
- mareury barometer
- margalite
- margalitic soil
- margin
- margin tile
- marginal bar
- marginal factor
- marginal lane
- marginal relay
- marina
- marine clay
- marine current
- marine dredging
- marine erosion
- marine park
- marine railway
- marionette theater
- marker beacon
- marker off
- market building
- market conduct
- market test
- market value
- marking gauge
- marking plate
- marl
- marl chalk
- marl loess
- marl slate
- marlaceous limestone
- material characteristic
- material classification
- material consuming
- material department
- material fatigue
- material handling
- material hoist
- material incentive
- material incentives
- material level
- material order
- material platform
- material property
- material reserves
- material saving
- material source
- material stockpiling
- material store
- materials elevator
- materials lift
- materials lock
- materials preparation
- mathematical programming
- mathematical reasoning
- matrix block
- matrix model
- matt paint
- matt varnish
- mattess
- mattress
- mattress revetment