| NEPER | Unit expressing ratios, named after the inventor of logarithms (5) |
| NOBEL | Prize named after the inventor of dynamite (5) |
| COLTS | Revolvers named after the inventor (5) |
| RADIX | In mathematical numerical systems, the quantity on which a system of numeration (or of logarithms) is based (5) |
| PRIME | Description of some numbers in formal basis of logarithms |
| TORR | Unit of pressure named after the inventor of the barometer |
| WATT | Unit of power named after the inventor of the word horsepower (4) |
| JOHNNAPIER | Scottish mathematician known as the inventor of logarithms (4,6) |
| NAPIER | John ?, Scottish mathematician known as the inventor of logarithms |
| BEL | Fromagier who founded a company that produces "baby" Edam cheeses; or, a unit of sound intensity named after the inventor of the telephone (3) |
| EULER | Mathematician who popularised notational conventions including i to denote the imaginary unit and e for the base of the natural logarithm (5) |
| DEWALT | Power-tool brand named after the inventor of the radial-arm saw |
| TATE | London art gallery named after the inventor of the sugar cube (4) |
| NOBELIUM | Element, atomic no. 102, named after the inventor of dynamite (8) |
| BRAKEHORSEPOWER | Imperial unit expressing the force available at the shaft of an engine (5,10) |
| TOOTSIEROLL | Snack item named after the inventor's 6-year-old daughter |
| MANTISSA | Prayer, as recalled, for the end of logarithms! |
| NAPIERIAN | Relating to a system of logarithms (9) |
| TOG | Unit expressing insulating properties of clothes (UK) |
| MANTISSAS | Small parts of logarithms (9) |
