1. able to be seen or noticed
2. able to be measured or detected scientifically
Usage: scientific

1. a quantity or property that can be measured in physics
Usage: physics

Examples

• The changes in her behavior were clearly observable to everyone.
• Stars are observable through a telescope on clear nights.
• The scientist recorded all observable phenomena during the experiment.
• Temperature is an observable property of matter.
• The effects of the medication were observable within hours.
• In quantum mechanics, position and momentum are important observables.