adv. [f. prec. + -LY2.] In arithmetical manner, according to arithmetic; by numerical calculation. Arithmetically proportional: standing in arithmetical proportion.
[1477. Norton, Ord. Alch., in Ashm. 1652, v. 60. Joyne them together also Arithmetically.]
1571. Digges, Geom. Pract., II. xxiv. P iij. Arithmetically to attayne the quantitie of this longer portion, ye shall thus worke.
1656. trans. Hobbes’ Elem. Philos. (1839), 147. Four magnitudes arithmetically proportional.
1865. Carlyle, Fredk. Gt., VI. XV. vii. 33. The regiments are … complete, arithmetically and otherwise.
