- NASA
- natural attitude
- natural experiment
- natural killer cells can be placated
- natural killer cells know about stress
- natural killer cells plan their killings
- natural kinds
- natural theology
- naturalistic research
- Nature contrives to outwit us
- nature does not waste energy
- nature has a fecund womb
- nature has great laboratories
- nature is a pregnant mine
- nature planned for seed burs to become attached to passing animals
- negative analogy
- nervous system is a puppet-master
- neurodiversity
- neurones speak to each other
- neurotransmitters carry messages within the brain
- neutral questions
- neutral zone insinuates itself
- neutrinos are very shy
- neutron star resides in stellar graveyard
- neutrons do not like to be compressed
- Newton, Isaac
- Newton was a detective
- Newton's universe should be an island
- nomothetic
- novelty effect
- nuclear fission is like cellular fission
- null hypothesis
- null learning impediment
- nuts contain thousands of shoeboxes
- nylon molecules are like strands in a rope