English word solidus comes from Latin solidum ((physics, mathematics) solid (state of matter, shape).).
Solidus etymology history?
Solidus detailed word origin explanation
(physics, mathematics) solid (state of matter, shape).
(chemistry, physics) The line in a phase diagram marking the temperatures and pressures below which a given substance is a stable solid.. (historical) 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.. (historical) Various medieval and early modern coins or units of account, particularly:. (obsolete) : an English unit [...]