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solidus

1 American  
[sol-i-duhs] / ˈsɒl ɪ dəs /

noun

solidi plural
  1. a gold coin of ancient Rome, introduced by Constantine and continued in the Byzantine Empire; bezant.

  2. (in medieval Europe) a money of account equal to 12 denarii.

  3. virgule.


solidus 2 American  
[sol-i-duhs] / ˈsɒl ɪ dəs /

noun

Physical Chemistry.
  1. (on a graph of temperature versus composition) the curve connecting the temperatures at which a solid solution is in equilibrium with its vapor and with the liquid solution, and therefore connecting melting temperatures of solid solutions.


solidus British  
/ ˈsɒlɪdəs /

noun

  1. a technical name for slash

  2. a gold coin of the Byzantine empire

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

solidus Scientific  
/ sŏlĭ-dəs /
solidi plural
  1. The maximum temperature at which all components of a mixture (such as an alloy) can be in a solid state. Above the solidus some or all of the mixture will be in a liquid state.

  2. See illustration at eutectic Compare liquidus


Other Word Forms

Noun Inflected Forms

Etymology

Origin of solidus1

1350–1400; Middle English < Late Latin solidus ( nummus ) a solid (coin), a gold (coin)

Origin of solidus2

1900–05; < Latin: solid

Explanation

When someone uses the word solidus, they're either talking about an ancient gold coin and/or the punctuation mark also known as a slash. Solidus comes from the Late Latin nummus solidus, "solid coin," a reference to thick Byzantine Empire coins made of pure gold. The word shilling evolved from solidus, and later the slash between shillings and pence in English prices (eventually replaced by a decimal point) also came to be called a solidus. You use a solidus whenever you write a date this way: 6/19/1805, or a choice between two options like this: vanilla/chocolate.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Here is a little graphical palate cleanser: we visualized the life cycle of the parasite Schistocephalus solidus, which requires ingestion by a copepod, a fish and a bird—in that order—to survive and reproduce.

From Scientific American Dec. 14, 2022

The parasitic cestode Schistocephalus solidus requires a much larger host—specifically, a three-spined stickleback fish—to grow in and then a bird to breed in.

From Scientific American Sep. 29, 2022

The rock surrounding the plume is exposed to higher temperatures, the geothermal gradient crosses to the right of the green solidus line, and the rock begins to melt.

From Textbooks Jan. 1, 2017

Graph D and label Z show a subduction zone, where an addition of volatiles lowers the melting point, shifting the solidus to the left of the geothermal gradient.

From Textbooks Jan. 1, 2017

Has he not compelled you to give an account of every solidus which you received from the public funds even under the Gothic kings?

From Ravenna, a Study by Hutton, Edward

Charles sent fresh messengers to Desiderius, and offered him 14,000 gold solidi, if he would make restitution.

From The Formation of Christendom, Volume VII by Allies, Thomas W.

Glauke, the daughter of an Athenian sculptor, had studied the folds of the chlamys for years, and for this reason had been bought by the Empress at a cost of many thousand solidi.

From A Struggle for Rome, v. 1 by Dahn, Felix

But if he steal something worth 40 denarii, he shall pay 6 solidi.

From A Source Book of Medi?val History Documents Illustrative of European Life and Institutions from the German Invasions to the Renaissance by Ogg, Frederic Austin

If any freeman steal, outside of a house, something worth 2 denarii, he shall be sentenced to 600 denarii, which make 15 solidi.

From A Source Book of Medi?val History Documents Illustrative of European Life and Institutions from the German Invasions to the Renaissance by Ogg, Frederic Austin

The magnates of the city and Andreaccio treated with the pilot for its purchase, and paid 200 Roman solidi for the shrine, and 100 for a gemmed crown above it.

From The Shores of the Adriatic The Austrian Side, The Küstenlande, Istria, and Dalmatia by Jackson, F. Hamilton (Frederick Hamilton)

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