- naphthoyl
- napierian
- nappe inlet
- narrow fraction
- nascent action
- nascent hydrogen
- native element
- native gas
- native gold
- native silver
- natron
- multicomponent
- multigraded oil
- multilayer film
- multiple metamorphism
- multiple reflexion
- multiply rooted
- murbruk structure
- mushroom-shaped
- muthmannite
- muzzle
- myrmekite
- nacreous
- NAD
- naked karst
- Namurian stage
- napalm
- naphtha
- naphtha bottoms
- naphtha distillation
- naphtha gas
- naphtha sludge
- naphthalene oil
- naphthalenedisulphonic acid
- naphthane
- naphthenate
- naphthene index
- naphthenon
- naphthyl
- naphthylene
- nargusta
- narrow
- narrow cut
- nascent state
- native amalgam
- native asphalt
- native clay
- native copper
- native iron
- native metal
- native occurrence
- native paraffin
- natrium
- natrophilite
- natural asphalt
- natural bleaching
- natural curing
- natural density
- natural draft
- natural fiber
- natural gasoline
- natural ground
- natural mud
- natural oil
- natural plastic
- natural puzzolan
- natural adhesive
- natural aging
- natural clay
- natural current
- natural element
- natural gas
- natural graphite
- natural grease
- natural hydrocarbon
- natural musk
- natural potential
- natural selection
- nauli gum
- naumannite
- nautical chart
- naval stores
- neat cement
- neck flange
- necking
- needle ironstone
- needle oil
- needle ore
- negative catalysis
- negative catalyst
- negative ray
- negative reactor
- Negaune formation
- neighboring layer
- neighboring stratum
- nemaphyllite
- Neocomian stage
- neogene
- neolithic stage
- nephrite