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Etymology from Wiktionary, CC BY-SA 4.0.
beard-second
Today it means: A unit of length about the distance beard hair grows in one second: defined as five nanometers, or 10 nm according to some. Full definition →
Today it means: A unit of length about the distance beard hair grows in one second: defined as five nanometers, or 10 nm according to some. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.