| A | B |
|---|
| respiration | act of breathing again |
| semicircle | half of a circle |
| sextillion | unit with 21 zeros after it; 1000 quintillions |
| conspired | plotted (literally "breathe together" |
| subsonic | a speed below 738 miles per hour at sea level |
| transpires | what takes place |
| expire | no longer valid |
| sonic | sound |
| sexangular | geometric figure having six angles |
| perspire | sweat |
| semiannually | every six months |
| ultrasonic | speed above 738 miles per hour |
| seven-sided | septilateral |
| not gems of the highest value | semiprecious |
| septillillion | unit with 24 zeros after it; 1000 sextillions |
| inspire | breathe into |
| transonic | constant speed of 738 miles per hour |
| expiration | the last breath |
| sextant | used for measuring angular distances |
| pyromaniac | crazy about fire |
