naph - nitr
- nickelocene
- Nickelodeon
- nickelous
- nicker
- Nicki
- nickname
- nicknameless
- nicknamer
- Nicky
- nicky-tam
- niclosamide
- Nico
- Nicobar Islands
- Nicobars
- nicocodeine
- Nicodemus
- nicodicodeine
- Niçoise salad
- Nicol prism
- Nicolaitan
- Nicolaitanism
- Nicolaite
- Nicolas
- Nicolette
- Nicomachean
- Nicomedia
- nicomorphine
- Nicopolitan
- nicoracetam
- Nicosia
- Nicosian
- nicotiana
- nicotinamide
- nicotinamide adenine dinucleotide
- nicotinamide adenine dinucleotide phosphate
- nicotinamide adenine trinucleotide
- nicotine
- nicotine alkaloid
- nicotine gum
- nicotine patch