What does octāvus mean in Latin?

octāvus, a numeral, means “eighth; the ordinal number between septimus and nōnus.”.

How do you pronounce octāvus?

In classical Latin, [ɔkˈtaː.wʊs]; in ecclesiastical (church) Latin, [okˈtaː.vus].

English words that go back to Latin octāvus include octave, oitava and ochava.

numeralfirst/second-declension numeral

octāvus (feminine octāva, neuter octāvum)

Classical[ɔkˈtaː.wʊs]Ecclesiastical[okˈtaː.vus]

Mille Verba core vocabulary

singular
form	masculine	feminine	neuter
nominative	octāvus	octāva 8va	octāvum 8vum
genitive	octāvī 8vī	octāvae 8vae	octāvī 8vī
dative	octāvō 8vō	octāvae 8vae	octāvō 8vō
accusative	octāvum 8vum	octāvam 8vam	octāvum 8vum
ablative	octāvō 8vō	octāvā 8vā	octāvō 8vō
vocative	octāve 8ve	octāva 8va	octāvum 8vum

plural
form	masculine	feminine	neuter
nominative	octāvī 8vī	octāvae 8vae	octāva 8va
genitive	octāvōrum 8vōrum	octāvārum 8vārum	octāvōrum 8vōrum
dative	octāvīs 8vīs	octāvīs 8vīs	octāvīs 8vīs
accusative	octāvōs 8vōs	octāvās 8vās	octāva 8va
ablative	octāvīs 8vīs	octāvīs 8vīs	octāvīs 8vīs
vocative	octāvī 8vī	octāvae 8vae	octāva 8va

octāvus, a, um, adj. octo,

I. the eighth: octava pars, Cic. Att. 15, 26, 4: legio, Caes. B. G. 2, 23: marmor, the eighth mile-stone, Mart. 9, 65, 4.—

II. Subst.: octāva, ae, f.

A. (Sc. hora.) The eighth hour of the day, Mart. 4, 8, 5; Juv. 1, 49.—

B. (Sc. pars.) The eighth part, as a tax, Cod. Just. 4, 65, 7; Cod. Th. 4, 12, 6; Ulp. Fragm. 6, 12 (cf. octavarius).—

III. Adv.: octāvum, for the eighth time, Liv. 6, 36, 7.

From Proto-Italic *oktāwos, from Proto-Indo-European *oḱtṓwos, from *oḱtṓw, whence octō (“eight”).

Descendants