A solidus (coin).
From Late Latin solidus (“an imperial gold coin, in Medieval Latin applied to various coins, also any piece of money”).
Wikipedia solidus (plural solidi or soliduses)
- The line between the numerator and the denominator of a fraction.
- A forward slash or virgule.
- A late Roman gold coin (after 3rd Century CE); a bezant.
- (chemistry, physics) a line, in a phase diagram, below which a given substance is a stable solid and above which solid and liquid are in equilibrium
- solidus in The Century Dictionary, The Century Co., New York, 1911
- solidus at OneLook Dictionary Search