Sentence examples for known since from inspiring English sources

"known since" is a grammatically correct and commonly used phrase in written English.
It is typically used to describe something that has been recognized or understood for a long period of time. Example: Humans have known since ancient times that the Earth is round, as evidenced by early civilizations' navigation and astronomy skills.

Exact(57)

That has been known since 1939.

The Economist

Natural adhesives have been known since antiquity.

Encyclopedia Britannica

That much we have known since 1997".

The New Yorker

Which we have known since the 50s.

The Guardian - Opinion

"Steve I've known since I was 19.

The New York Times

This has been known since the 1970s.

The Guardian

Anthrax has been known since biblical times.

The New York Times

The electrochemical compression of hydrogen is well known since years.

Electrochimica Acta

Similar(3)

Synthetic inorganic exchangers have been known since 1903.

Encyclopedia Britannica

This has been known since 1996.

The Guardian

"It has been known since 2001.

Forbes

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