solidus1

[sol-i-duh s] /ˈsɒl ɪ dəs/
noun, plural solidi
[sol-i-dahy] /ˈsɒl ɪˌdaɪ/ (Show IPA)
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.
Compare sol2 .
3.
virgule.
Origin
1350-1400; Middle English < Late Latin solidus (nummus) a solid (coin), a gold (coin)

solidus2

[sol-i-duh s] /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.
Compare liquidus.
Origin
1900-05; < Latin: solid
Examples from the web for solidus
  • The numerator and denominator of the fraction shall be diagonally arranged about the solidus.
British Dictionary definitions for solidus

solidus

/ˈsɒlɪdəs/
noun (pl) -di (-ˌdaɪ)
1.
a technical name for slash (sense 12)
2.
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
Word Origin and History for solidus
n.

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.)).

solidus in Science
solidus
  (sŏl'ĭ-dəs)   
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.