Physics:Scrupulum

Short description: Roman unit of mass

Scrupulum, meaning a tiny stone (from scrupus sharp stone), indicates a weight of ​¹⁄₂₄ of a Roman ounce (i.e.) or, by extension, of other measures. Metaphorically, the stone is thought to be sharp and pricking, like a thorn.

• As a weight or a coin, ​¹⁄₂₄ of an uncia, or ​¹⁄₂₈₈ of an as; i.e. 1.14 grams
• As a measure of land, ​¹⁄₂₈₈ of a jugerum; i.e. about 9 m² (97 sq ft)
• As a measure of time, ​¹⁄₂₄ part of an hour, or ​2 ¹⁄₂ minutes.

The forms scripulum, scriptulum, scriplus and scriptulus can be found, scriptulum being also associated with the lines on a draughtboard.

See also

• Roman currency

References

Félix Gaffiot: Dictionnaire Illustré Latin Français, Hachette 1934