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[sol-i-duh s] /ˈsɒl ɪ dəs/
noun, plural solidi
[sol-i-dahy] /ˈsɒl ɪˌdaɪ/ (Show IPA)
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 solidus1
1350-1400; Middle English < Late Latin solidus (nummus) a solid (coin), a gold (coin)


[sol-i-duh s] /ˈsɒl ɪ dəs/
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.
1900-05; < Latin: solid Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for solidus


noun (pl) -di (-ˌdaɪ)
a technical name for slash (sense 12)
a gold coin of the Byzantine empire
Word Origin
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
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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
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solidus in Science
Plural solidi (sŏl'ĭ-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 © 2002. Published by Houghton Mifflin. All rights reserved.
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