LATIN DICTIONARYLexicon Latīnum
numeralfirst/second-declension numeral

bīnus

bīnus (feminine bīna, neuter bīnum)
Classical[ˈbiː.nʊs]Ecclesiastical[ˈbiː.nus]

Meaning

  1. in pluralnumeraltwo each
    Et praetoribus prioris anni M. Iunio in Etruria, P. Sempronio in Gallia cum binis legionibus quas habuerant prorogatum est imperium.[…] And the military command of Marcus Junius in Etruria and Publius Sempronius in Gaul, praetors of the previous year, was extended with the two legions which they had each held.27 BCE – 25 BCE, Titus Livius, Ab urbe condita 26.1
  2. numeralpluralin pairs
    [...] ipse uno graditur comitatus Achate,… Achates following him, Aeneas leaves away his men, Clasping with his hand to his two broad-tipped javelins.29 BCE – 19 BCE, Vergilius, Aeneis I.311–312
  3. numeraloccurring twice, twofold, double, binary

Declension

singular
formmasculinefeminineneuter
nominativebīnusbīnabīnum
genitivebīnībīnaebīnī
dativebīnōbīnaebīnō
accusativebīnumbīnambīnum
ablativebīnōbīnābīnō
vocativebīnebīnabīnum
plural
formmasculinefeminineneuter
nominativebīnībīnaebīna
genitivebīnum
bīnōrum
bīnum
bīnārum
bīnum
bīnōrum
dativebīnīsbīnīsbīnīs
accusativebīnōsbīnāsbīna
ablativebīnīsbīnīsbīnīs
vocativebīnībīnaebīna

Phrases from Meissner's Latin Phrase-Book

binis centesimis fenerari
to lend at 24 per cent.

bīnus, a, um, v. bini.

Origins

  1. Proto-Indo-European*dwóh₁
  2. Latinbīnus

Proto-Indo-European *trísinflu. Proto-Indo-European *dwís Proto-Italic *dwis Proto-Indo-European *-nós Proto-Italic *-nos Proto-Italic *dwiznos Latin bīnus Inherited from Proto-Italic *dwiznos. By surface analysis, bis (“twice, at two times, on two occasions”, adverb) + -nus (distributive numeral-forming suffix).

Quick answers

What does bīnus mean in Latin?
bīnus, a numeral, means “two each; in pairs; occurring twice, twofold, double, binary”.
How do you pronounce bīnus?
In classical Latin, [ˈbiː.nʊs]; in ecclesiastical (church) Latin, [ˈbiː.nus].
Where does bīnus come from?
Proto-Indo-European *dwóh₁ → Latin bīnus.