solidus

noun
sol·​i·​dus | \ ˈsä-lə-dəs How to pronounce solidus (audio) \
plural solidi\ ˈsä-​lə-​ˌdī How to pronounce solidi (audio) , -​ˌdē \

Definition of solidus

1 : an ancient Roman gold coin introduced by Constantine (4th century) and used to the fall of the Byzantine Empire (15th century)
2 [ Medieval Latin, shilling, from Late Latin; from its use as a symbol for shillings ] : slash sense 4

First Known Use of solidus

14th century, in the meaning defined at sense 1

History and Etymology for solidus

Middle English, from Late Latin, from Latin, solid

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