| A | B |
| root | The lowermost part, or a structure by which something is firmly attached. |
| route | Channel; a line of travel. |
| scarpa's | (Scarpa's fascia) the deep membranous layer of subcutaneous abdominal fascia. |
| scarpus | This is not a real word; however, new transcriptionists will often type it anyway. Make sure you know that the correct word is Scarpa's. |
| silicon | A nonmetallic element occurring in nature. |
| silicone | Any organic compound in which all or part of the carbon has been replaced by silicon. |
| sight | The process, function, or power of seeing. |
| site | A place, position, or locus. |
| track | Path, route; the path along which something moves, or the mark left by its movement. |
| tracked | Past tense of track. |
| tract | A region, usually one of some length; specifically a collection of nerve fibers or a number of organs, arranged in a series, serving a common function. |