solidus

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Pronunciation

• IPA: /ˈsɒlɪdəs/

Noun

solidus (plural solidi)

1. (historical) Various medieval and early modern coins or units of account, particularly:
   1. A Roman ~23k gold coin introduced by Diocletian in AD 301.
   2. Its successor Byzantine coins, from the eleventh century onward of progressively debased weight and purity.
   3. (obsolete) Synonym of sol#English|sol or sou: a Carolingian unit of account equivalent to a solidus of silver.
   4. (obsolete) Synonym of soldo#English|soldo: the silver coins of various Italian states.
   5. (obsolete) Synonym of shilling#English|shilling: an English unit of account and, following the Tudor dynasty, silver coin.
2. (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.
3. (historical) A medieval French weight, 1/20 of the Carolingian pound.
4. (typography) Synonym of slash#English|slash ⟨/⟩, originally (UK) in its use as the shilling mark and now its formal designation by the ISO and Unicode.
5. (typography) The formal name of the oblique strikethrough overlay (as in A̷ and B̸) in Unicode.
6. (typography) The division line between the numerator and the denominator of a fraction, whether horizontal or oblique.
7. (chemistry, physics) The line in a phase diagram marking the temperatures and pressures below which a given substance is a stable solid.

Synonyms

• (Roman coin) nomisma, bezant (in Greek and Byzantine contexts)
• (debased Byzantine successors) nomisma, hyperpyron, bezant
• (typographic symbols) See slash and strikethrough

Translations

• French: soldius
• German: Solidus
• Portuguese: soldo
• Russian: со́лид
• Spanish: sueldo

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