| WAVELENGTH | The distance between two successive similar points on an alternative wave (10) |
| ANNO | On an alternative setting in the year (4) |
| ADAPT | Take on an alternative (5) |
| DONOR | Put on an alternative as benefactor (5) |
| CALLIPER | Instrument for measuring the distance between two points (often used in the plural) (8) |
| ANGLE | From the Latin meaning "corner", a word for the distance between two rays, measured in degrees/radians (5) |
| LENGTHS | Units that measure the distance between two horses in a race |
| OCTAVE | The distance between two musical notes that are eight notes apart (6) |
| SPAN | In engineering, the distance between two adjacent structural supports (4) |
| TEHEE | The inclusion of two similar points produces a titter |
| STROKE | The distance between the highest and lowest points reached by the piston moving in the cylinder (6) |
| LINE | A straight one is the shortest distance between two points |
| TIME | "The longest distance between two places," per "The Glass Menagerie" |
| UMBEL | Rounded or flat-topped inflorescence in which the individual flowers arise from the same point on an axis, characteristic of plants in the parsley family (5) |
| TANK | Deliberately drop points on an armoured vehicle (4) |
| INLAND | Laid roughly around similar points, and away from the coast (6) |
| ISOMETRY | Geometric transformation in which the distance between any two points is unaltered, e.g. the rotation of a plane (8) |
| METRE | One ten-millionth of the distance between the North Pole and the equator (as defined by the French Academy of Sciences in 1791) |
| GAUGE | Which word indicates the distance between the rails on a line of railroad track? (5) |
| PAR | Golf's scoring standard that reflects the distance between the tee and the hole |
