noun · 13 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
General-American:sŏl'ĭdəs
General-American:/ˈsɑlɪdəs/
Received-Pronunciation:/ˈsɒlɪdəs/
US:Recorded audio is listed in the source snapshot.
1
noun
Meaning 1
Various medieval and early modern coins or units of account
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.
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Various medieval and early modern coins or units of account
Its successor Byzantine coins, from the eleventh century onward of progressively debased weight and purity.
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
Various medieval and early modern coins or units of account
Synonym of sol or sou: a Carolingian unit of account equivalent to a solidus of silver.
Definition source: English Wiktionary via Wiktextract
Usage: historical, obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: sol, sou
Antonyms: none provided
4
noun
Meaning 4
Various medieval and early modern coins or units of account
Synonym of soldo: the silver coins of various Italian states.
Definition source: English Wiktionary via Wiktextract
Usage: historical, obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: soldo
Antonyms: none provided
5
noun
Meaning 5
Various medieval and early modern coins or units of account
Synonym of shilling: an English unit of account and, following the Tudor dynasty, silver coin.
Definition source: English Wiktionary via Wiktextract
Usage: historical, obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: shilling
Antonyms: none provided
6
noun
Meaning 6
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.
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
noun
Meaning 7
A medieval French weight, 1/20 of the Carolingian pound.
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
noun
Meaning 8
Synonym of slash ⟨/⟩, originally (UK) in its use as the shilling mark and now its formal designation by the ISO and Unicode.
Definition source: English Wiktionary via Wiktextract
Topics: media, publishing, typography
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: slash, originally
Antonyms: none provided
9
noun
Meaning 9
The formal name of the oblique strikethrough overlay (as in A̷ and B̸) in Unicode.
Definition source: English Wiktionary via Wiktextract
Topics: media, publishing, typography
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
10
noun
Meaning 10
The division line between the numerator and the denominator of a fraction, whether horizontal or oblique.
Definition source: English Wiktionary via Wiktextract
Topics: media, publishing, typography
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
noun
Meaning 11
The line in a phase diagram marking the temperatures and pressures below which a given substance is a stable solid.
Definition source: English Wiktionary via Wiktextract
a gold coin of the Byzantine Empire; widely circulated in Europe in the Middle Ages
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: bezant, bezzant, byzant
Antonyms: none provided
Broader terms: coin
History
Etymology
From Middle English solidus, from classical Latin solidus (“solid”), see below. Doublet of sol, sold, soldo, solid, sou, and xu. In numismatic and weight senses, via medieval Latin solidus (“various coins”), from Late Latin solidus (“a gold coin of the Roman Empire”). In chemical sense, via German Solidus, coined by H.W.B. Roozeboom in his 1899 Zeitschrift für Physikalische Chemie, Stöchiometrie, und Verwandtschaftslehre (XXX, page 387). In typography, from the shilling mark originally being an abbreviation (a long s ⟨s⟩), of Medieval Latin solidus meaning shilling.
Across languages
Translations
8 source translations are retained for this English entry.