It is derived from the Sanskrit word "yugam" (युगम्) which also means "pair" or "couple".
You might see this word used in contexts like:
* "Yugma phool" (युग्म फूल): A pair of flowers
* "Yugma prajapati" (युग्म प्रजापति): A couple of gods
* "Yugma prabhaav" (युग्म प्रभाव): A pair of effects
Hope this helps!