millesimal

American  

[mi-les-uh-muhl] / mɪˈlɛs ə məl /

adjective

1. thousandth.

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noun

1. a thousandth part.

millesimal British  

/ mɪˈlɛsɪməl /

adjective

1. 1. denoting a thousandth

   2. ( as noun )

      a millesimal

2. of, consisting of, or relating to a thousandth

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Other Word Forms

• millesimally adverb

Etymology

Origin of millesimal

1710–20; < Latin millēsim ( us ) thousandth ( mille thousand + -ēsimus ordinal suffix) + -al ¹

Example Sentences

Sir John Leslie says:—“Under a clear blue sky, the æthrioscope will sometimes indicate a cold of fifty millesimal degrees; yet, on other days, when the air seems equally bright, the effect is hardly 30°.”

From A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility by Negretti, Henry

Adj. quinquefid, quinquelateral, quinquepartite; quinqevalent, pentavalent; quinquarticular†; octifid†; decimal, tenth, tithe; duodecimal, twelfth; sexagesimal†, sexagenary†; hundredth, centesimal; millesimal &c.

From Roget's Thesaurus of English Words and Phrases by Roget, Peter Mark