| harmonic progression | |
| —n | |
| a sequence of numbers whose reciprocals form an arithmetic progression, as 1, ½, 1⁄3, … | |
| harmonic progression
A sequence of quantities whose reciprocals form an arithmetic progression, such as 1, 1/3 , 1/5 , 1/7 , .... and so on. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| the offspring of a zebra and a donkey. |