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Medical Word Parts - Letter: n
| Term | Definition |
| nano- | one-billionth, dwarfism |
| narc/o | sleep, numbness, stupor |
| nas/o | nose |
| nat/o | birth |
| natr/o | sodium |
| necr- | death, corpse |
| neo- | new |
| nephr/o | kidney |
| neur/o | nerve |
| neuri- | nerve, nervous system |
| neutr/o | neutral |
| nev/o | mole, birthmark |
| noct/i | night |
| nod/o | knot |
| -noia | mind, will |
| nomen- | name, pertaining to names |
| non- | not |
| norm- | normal |
| nos- | disease |
| noto- | back |
| nucle/o | nucleus |
| nulli- | none |
| nutri/o | to nourish |
| nyct/o | night, darkness |