natu - nico
- natural abortion
- natural antibody
- natural birth
- natural emerging method
- natural host
- natural immunity
- natural juvantia
- natural killer cell
- natural mating
- natural mutation
- natural population
- natural resistance
- natural selection
- natural ventilation
- nausea
- nauseant
- navel ill
- navicular bone
- navicular bursa
- near accommodation
