| COULOMB | Unit of electric charge in the metre-kilogram-second-ampere system abbreviated as C. It is the quantity of electricity transported in one second by a current of one ampere. (7) |
| ABCOULOMB | The basic physical unit of electric charge in the cgs-emu system of units |
| GIORGI | Physicist whose metre-kilogram-second system of measurement formed the basis of SI units (6) |
| IAMBIS | Already twice, in the metre of conversation (see Horace Odes 1.16.3) |
| ALTERNATIVEVOTE | Election system abbreviated as AV (11,4) |
| CITRON | Being a source of vitamin C, it is found in a variety of corn (6) |
| SPINACH | Green, leafy vegetable rich in vitamin C, it is used in the traditional Mallorcan dish espinagada and served with pine nuts and raisins when cooked Catalan-style (7) |
| HAWS | Heavy Assault Weapon System, abbreviated |
| PUNT | A dimple in the base of a glass wine bottle; a type of drop kick for touch in rugby; a bet/gamble on horses or in roulette; a point in faro; or, a riverboat propelled with a quant (4) |
| USSR | It's written as "C.C.C.P." in Cyrillic |
| TORCHWOOD | BBC TV spin-off from the new Doctor Who series, it's set in Cardiff and features John Barrowman as C |
| AMPEREHOUR | Unit of electric charge equivalent to 3,600 coulombs |
| CARPET | It's bought by the metre but worn out by the foot (6) |
| COULOMBS | Derived SI units of electric charge (8) |
| IMHO | As i c it ... |
| ANALOGY | "A is to B as C is to D," e.g. |
| HIPPOPOTUS | Aquatic mammal elected as c. in c.? |
| SAM | "Good luck, ___, at sailing." (line delivered by Bing Crosby as "C.K. Dexter Haven" to Grace Kelly as "Tracy Samantha Lord," just before leaving her with a wedding present, a toy-model of true love) |
| SCAN | Study the metre of some famous canto |
| EDAM | The Dutch export barkless cedar by the metre (4) |
