solidus

noun12

1. •
   (historical) Various medieval and early modern coins or units of account
2. •
   The formal name of the oblique strikethrough overlay (as in A̷ and B̸) in Unicode.
3. •
   Synonym of slash ⟨/⟩, originally (UK) in its use as the shilling mark and now its formal designation by the ISO and Unicode.
4. •
   (historical) A Roman ~23k gold coin introduced by Diocletian in AD 301 and called by that name, but reissued at a slightly lower weight by Constantine I.
5. •
   (historical) Its successor Byzantine coins, from the eleventh century onward of progressively debased weight and purity.
6. •
   The division line between the numerator and the denominator of a fraction, whether horizontal or oblique.
7. •
   The line in a phase diagram marking the temperatures and pressures below which a given substance is a stable solid.
8. •
   (historical) The weight of the Roman gold coin, 1/60 of a Roman pound under Diocletian or 1/72 lb. (about 4.5 grams) after Constantine.
9. •
   (historical) A medieval French weight, 1/20 of the Carolingian pound.
10. •
    (no longer used, historical) Synonym of sol or sou: a Carolingian unit of account equivalent to a solidus of silver.
11. •
    (no longer used, historical) Synonym of soldo: the silver coins of various Italian states.
12. •
    (no longer used, historical) Synonym of shilling: an English unit of account and, following the Tudor dynasty, silver coin.