DISCOVER

Discover or determine the existence, presence, or fact of by perception with the eyes

Example: "She detected high levels of lead in her drinking water"

Get to know or become aware of, usually accidentally

Example: "I learned that she has two grown-up children"

Make a discovery, make a new finding

Example: "Roentgen discovered x-rays"

Find unexpectedly

Example: "The archeologists chanced upon an old tomb"

Make known to the public information that was previously known only to a few people or that was meant to be kept a secret

Example: "The auction house would not disclose the price at which the van gogh had sold"

See for the first time; make a discovery

Example: "Who discovered the north pole?"

Identify as in botany or biology, for example