millesimally en · ADV
Etymology
From millesimal + -ly.
Meanings
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(not-comparable) In thousandths.
We propose to inquire how far these objects are likely to be gained by the plan recommended by the Parliamentary Committee, having as its basis the pound sterling, millesimally divided, as the integer of the decimal.
1854, James Laurie, Decimal Coinage, page vii:The “tolerance” or “remedy” of fineness, millesimally expressed, is, for gold coins, 0.002; […]
1873, Collection of Pamphlets on Coinage, volume 11, numbers 1-12, page 75: