standard meter, n.Definitions

The Standard meter (n.) would ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠mean nothing to someone who knew nothing of the institution of measuring, and a proof is part of an institution too.