- non flexing
- non-compliance
- non-corroding
- net drainage
- net income
- net section
- neutralization chamber
- nife
- night bar
- night rate
- night visibility
- nightlatch
- nippers
- nitrous earth
- no button
- non-creep
- non-deflecting
- non-flammable
- non-homogeneous
- non-mineral
- non-variant
- nonarticulated
- nonbearing partition
- nonlead glaze
- nonlinear relation
- nonoverflow section
- nonprismatic channel
- nonproduction assets
- nonreinforced brickwork
- nonrigid carriageway
- normal bend
- normal consistency
- no return
- nodal equilibrium
- noddle
- node
- nodular
- nog
- nog plate
- nogging
- nogging piece
- noise
- noise abatement
- noise absorption
- noise attenuation
- noise control
- noise deadening
- noise dose
- noise level
- noise lowering
- noise ratio
- noise wall
- non-skid
- non-soluble
- nonaerated roof
- nonalkali mortar
- nonbearing structure
- nonconsumable electrode
- none
- nonflooded
- nonfrothing floatation
- nonlinear creep
- nonlinear displacement
- nonlinear function
- nonmetallic
- nonmetallic minerals
- nonplanar frame
- nonprismatic bed
- nonrail
- nonrigid subbase
- nonstandard equipment
- nontoxic environment
- noise chart
- noise evaluation
- noise load
- noise spectrum
- nomenclature
- nominal load
- nominal mix
- nominal speed
- nominal strength
- nominal thickness
- non-clastic
- non-conformable
- non-corrodible
- non-corrosive
- non-twistable
- nonaerated spillway
- nonbearing part
- nonbearing structures
- noncontact measurements
- nondamped
- nonequilibrium state
- nongravity spring
- nonionogenic adsorbent
- nonprestressed reinforcement
- nonrigid pavement
- nonrigid system
- nonstandard
- nonstationary constraints