solidus

noun sol·i·dus \ˈsä-lə-dəs\

plural sol·i·di\-lə-ˌdī, -ˌdē\

Definition of SOLIDUS

: an ancient Roman gold coin introduced by Constantine and used to the fall of the Byzantine Empire

[Medieval Latin, shilling, from Late Latin; from its use as a symbol for shillings] : slash 4

Middle English, from Late Latin, from Latin, solid

First Known Use: 14th century

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