Medium
Medium explained in an easy to understand way:
Imagine trying to pass a message across a crowded room at a party without shouting. Just as you rely on people (who act as intermediaries) to relay your message, a medium like air carries sound waves from one point to another. In this analogy, the people in the room are akin to the air molecules that facilitate the movement of sound, ensuring your words reach their destination despite the noise.
Practice Version
Medium: The substance through which a wave can travel, like air, which carries sound waves. Medium. In Science, a medium is the material or space through which waves, like sound or light, move.