Medical Terminology Letter N
| TERM | MEANING |
| nano- | one billionth (10⁻⁶) |
| narc/o | numbness, stupor |
| nas/o | nose |
| nat/o | birth |
| natr/o | sodium |
| necr/o | death |
| neo- | new |
| nephr/o | kidney |
| neur/o | nerve |
| neutr/o | neutral |
| nev/o | mole, birthmark |
| noci- | to cause harm, injury, or pain |
| noct/i | night |
| nod/o | knot |
| -noia | mind, will |
| nomen- | name |
| nom/o | custom, law |
| noni- | nine |
| norm/o | normal, usual |
| nos/o | disease |
| not/o | the back |
| nucle/o | nucleus |
| nulli- | none |
| nutri/o, nutrit/o | nourish |
| nyct/o | night |
