| Binary system |
| PC linkup system |
| Alkaline ecosystems |
| Discount rack shorthand |
| Bit of chatroom shorthand |
| ___ system (blood classification) |
| Diagnostic lab system |
| Feature of Melvil Dewey's book classification system |
| Inventory, for short |
| Inventory item |
| Buy now, pay later" system |
| System with dots and dashes |
| Chatroom digression shorthand |
| Inventory |
| Inventor's spark |
| Digression shorthand |
| Airline with missile defense systems |
| Shorthand developer |
| Actress and inventor Lamarr |
| Aircraft-detection system |
| System of fixed attention, contemplation, concentration. |
| Paris underground system |
| America's economic system |
| Bit of texting shorthand |
| Closest pal, in IM shorthand |
| Anti-gravity suit" inventor Dr Wilbur _____ |
| Shorthand system introduced in 1888 |
| German inventor, designer of the first rigid motorised airship, d. 1917 |
| All systems go" signals |
| Electronic detection system |