1. Not constituting a compound
   - unmixed

See also: uncombined

• Nootka cypress
• nopal
• Nopalea
• nope
• nor
• nor'-east
• nor'-nor'-east
• nor'-nor'-west
• nor'-west
• Nor-Q-D
• noradrenaline
• Norbert Wiener
• Nord-Pas-de-Calais
• nordic
• noreaster
• Noreg
• norepinephrine
• norethandrolone
• norethindrone
• norethindrone acetate
• norethynodrel
• Norflex
• Norfolk
• Norfolk Island
• loy