An indication is a sign that points toward something or suggests that something is true. When dark clouds gather in the sky, that's an indication that rain might be coming. When your friend keeps checking the clock during your conversation, it's an indication they might need to leave soon.

Doctors look for indications of illness: a fever is an indication of infection, while clear eyes and steady breathing are indications of good health. Scientists search for indications that their theories are correct. A teacher might see early indications of talent when a student solves problems in creative ways.

An indication does not prove something definitively, but it points in a direction. If your normally energetic dog lies quietly in the corner, that's an indication something might be wrong, even if you don't know exactly what yet.

In medicine, indication has a specific meaning: the reason for using a particular treatment. The indication for taking an antibiotic might be a bacterial infection, while pain might be an indication for taking aspirin.

Think of indications as clues or hints. They give you useful information without telling you the whole story, helping you figure out what's happening or what might happen next.