† primo-rationaln.

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin prīmō , rationale n.¹

Etymology: < classical Latin prīmō (adverb) first + rationale n.¹, after prime ratio n. at prime adj. and adv. Compounds; compare -o- connective.

Mathematics. Obsolete. rare.

An increment in a variable, as used to calculate a prime ratio in Newton's method of fluxions (see prime ratio n. at prime adj. and adv. Compounds).

ΚΠ

1862 A. De Morgan Let. 23 Mar. in R. P. Graves Life Sir W. R. Hamilton (1889) III. 576 I would rather use primo-rationals than differentials.

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online June 2021).

单词	primo-rational
释义	† primo-rationaln. Origin: A borrowing from Latin, combined with an English element. Etymons: Latin prīmō , rationale n.¹ Etymology: < classical Latin prīmō (adverb) first + rationale n.¹, after prime ratio n. at prime adj. and adv. Compounds; compare -o- connective. Mathematics. Obsolete. rare. An increment in a variable, as used to calculate a prime ratio in Newton's method of fluxions (see prime ratio n. at prime adj. and adv. Compounds). ΚΠ 1862 A. De Morgan Let. 23 Mar. in R. P. Graves Life Sir W. R. Hamilton (1889) III. 576 I would rather use primo-rationals than differentials. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online June 2021). < n.1862
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