[sol-i-duh s]

noun, plural sol·i·di [sol-i-dahy] /ˈsɒl ɪˌdaɪ/.

a gold coin of ancient Rome, introduced by Constantine and continued in the Byzantine Empire; bezant.
(in medieval Europe) a money of account equal to 12 denarii.Compare sol2.

Origin of solidus

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


[sol-i-duh s]

noun Physical Chemistry.

(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.
Compare liquidus.

Origin of solidus

1900–05; < Latin: solid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for solidus

Historical Examples of solidus

  • The form scanomodu on the solidus need not be taken into account.

    The Heroic Age

    H. Munro Chadwick

  • There were 12 denarii to the solidus and 20 soldi to the pound of silver.

  • These curves are also called the "liquidus" and the "solidus" curve respectively.

  • The asterisk is used to indicate illegible letters, and the solidus (/) erasures.

  • The price of one solidus for thirty modii is48 almost exorbitant; grain cost exactly one half this at the time of Theodoric.

    Pagan and Christian Rome

    Rodolfo Lanciani

British Dictionary definitions for solidus


noun plural -di (-ˌdaɪ)

a technical name for slash (def. 12)
a gold coin of the Byzantine empire

Word Origin for solidus

C14: from Late Latin solidus (nummus) a gold coin (from solidus solid); in Medieval Latin, solidus referred to a shilling and was indicated by a long s, which ultimately became the virgule
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

Word Origin and History for solidus

late 14c., plural solidi, used of both English shilling and Roman gold coin, from Late Latin solidus, an imperial Roman coin (worth about 25 denarii), from nummus solidus, literally "solid coin" (see solid (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for solidus



Plural solidi (sŏlĭ-dī′)

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. See illustration at eutectic. Compare liquidus.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.