To observe means to watch something carefully and notice details about it. When scientists observe an experiment, they pay close attention to what happens and record what they see. When you observe a bird building its nest, you watch closely to see exactly how it gathers materials, weaves them together, and shapes the structure.

Observing is different from just seeing. Your eyes might see hundreds of things as you walk to school, but when you truly observe something, you focus on it and think about what you're noticing. A detective observes clues at a mystery scene. A doctor observes symptoms to figure out what's wrong. Good observers notice things that others miss because they're paying attention.

The word also means to follow or obey a rule, tradition, or custom. When people observe a holiday like Thanksgiving, they celebrate it and follow its traditions. When drivers observe speed limits, they stick to the rules. A soldier might observe military protocol, meaning they follow the proper procedures.

An observation is something you notice or a comment you make about what you've seen. You might make an observation about how your friend seems quieter than usual, or write down observations about how plants grow in different conditions.