# octodecim

## Latin

### Étymologie

    Composé de octo et de decem : « huit-et-dix ».

### Adjectif numéral

octodecim indéclinable

* Dix-huit (nombre cardinal 18).

**Synonymes**

* duodeviginti

**Vocabulaire apparenté par le sens**

Nombres en latin :

| Arabe | numerus | cardinalis | ordinalis | adverbium | distributivus | multiplicativus | divisio | collectivus | circum | monetarius |
| - | - | - | - | - | - | - | - | - | - | - |
| 0 | - | nihil, nullus | - | - | - | - | - | - | - | - |
| 1 | I | unus | primus | semel | singuli | simplex | - | unio | - | assis |
| 2 | II | duo | secundus | bis | bini | duplex | semis | binio | duitas | dupondius |
| 3 | III | tres | tertius | ter | terni | triplex | triens | ternio | trias | tressis |
| 4 | IV | quattuor | quartus | quater | quaterni | quaduplex | quadrans | quaternio | - | quadrussis, quadrassis |
| 5 | V | quinque | quintus | quinquies, quinquiens | quini | quintuplex, quincuplex | - | quinio | - | quinquessis |
| 6 | VI | sex | sextus | sexies, sexiens | seni | sextuplex | sextans | senio | - | sexis |
| 7 | VII | septem | septimus | septies, septiens | septeni | septuplex | - | - | septas | septussis |
| 8 | IX | octo | octavus | octies, octiens | octoni | octuplex | octans | - | octas | octussis |
| 9 | IX | novem | nonus | nonies, noniens | noveni | nonuplex | - | - | - | nonussis |
| 10 | X | decem | decimus | decies, deciens | deni | decuplex | - | - | decas | decussis |
| 11 | XI | undecim | undecimus | undecies, undeciens | undeni | undecuplex | - | - | - | undecim aes |
| 12 | XII | duodecim | duodecimus | duodecies, duodeciens | duodeni | duodecuplex | uncia | - | duodecas | duodecim aes |
| 13 | XIII | tredecim | tertius decimus | tredecies, tredeciens | terni deni, ternideni | tredecuplex | - | - | - | - |
| 14 | XIV | quattuordecim | quartus decimus | quattuordecies, quattuordeciens | quaterni deni | quattuordecuplex | - | - | - | - |
| 15 | XV | quindecim | quintus decimus | quindecies, quindeciens | quini deni, quindeni | quindecuplex | - | - | - | - |
| 16 | XVI | sedecim | sextus decimus | sedecies, sedeciens | seni deni, senideni | sedecuplex | - | - | - | - |
| 17 | XVII | septendecim | septimus decimus | septendecies, septendeciens | septeni deni | septendecuplex | - | - | - | - |
| 18 | XVIII | duodēvīgintī, octodecim | duodēvīcēsimus | duodevicies, duodeviciens | duodeviceni | duodevigentuplex | - | - | - | - |
| 19 | XIX | undēvīgintī, novemdecim | undēvīcēsimus | undevicies, undeviciens | undeviceni | undevigentuplex | - | - | - | - |
| 20 | XX | viginti | vicēsimus | vicies, viciens | viceni | vigintuplex | - | - | - | vicessis |
| 21 | XXI | viginti unus, unus et viginti | vicēsimus primus | vicie(n)s semel | viceni singuli | vigintuplex simplex | - | - | - | - |
| 28 | XXVIII | duodetriginta, viginti octo | duodetricēsimus, vicēsimus octavus | duodetrcie(n)s, vicies octies | duodetriceni, viceni octoni | duodetrigintuplex, vigintuplex octuplex | - | - | - | - |
| 29 | XXIX | undetriginta, viginti novem | undetricēsimus, vicēsimus nonus | undetrcie(n)s, vicies nonies | undetriceni, viceni noveni | duodetrigintuplex, vigintuplex nonuplex | - | - | - | - |
| 30 | XXX | triginta | tricēsimus | tricies, triciens | triceni | trigintuplex | - | - | - | tricessis |
| 40 | X | quadrāginta | quadrāgēsimus | quadrāgies, quadrāgiens | quadrāgeni | quadrāgintuplex | - | - | - | quadragessis |
| 50 | L | quīnquāginta | quīnquāgēsimus | quīnquāgies, quīnquāgiens | quīnquāgeni | quīnquāgintuplex | - | - | - | quinquagessis |
| 60 | LX | sexāginta | sexāgēsimus | sexāgies, sexāgiens | sexāgeni | sexāgintuplex | - | - | - | sexagessis |
| 70 | LX | septuāginta | septuāgēsimus | septuāgies, septuāgiens | septuāgeni | septuāgintuplex | - | - | - | septuagessis |
| 80 | LXXX | octōginta | octōgēsimus | octōgies, octōgiens | octōgeni | octōgintuplex | - | - | - | octogessis |
| 90 | XC | nōnāginta | nōnāgēsimus | nōnāgies, nōnāgiens | nōnāgeni | nōnāgintuplex | - | - | - | nonagessis |
| 99 | IC ou XCIX | undecentum, nonaginta novem | undecentēsimus | undecentie(n)s | undecenteni | - | - | - | - | - |
| 100 | C | centum | centēsimus | centies, centiens | centeni | centuplex | - | - | centas | centussis |
| 101 | CI | centum unus | centēsimus primus | centie(n)s semel | - | - | - | - | - | - |
| 200 | CC | ducenti | ducentēsimus | ducenties, ducentiens | duceni | ducentuplex | - | - | - | - |
| 300 | CCC | trecenti | trecentēsimus | trecenties, trecentiens | treceni | trecentuplex | - | - | - | - |
| 400 | CD | quadringenti | quadringentēsimus | quadringenties, quadringentiens | quadringeni | quadringentuplex | - | - | - | - |
| 500 | D | quīngenti | quīngentēsimus | quīngenties, quīngentiens | quīngeni | quīngentuplex | - | - | - | - |
| 600 | DC | sescenti | sescentēsimus | sescenties, sescentiens | sesceni | sescentuplex | - | - | - | - |
| 700 | DCC | septingenti | septingentēsimus | septingenties, septingentiens | septingeni | septingentuplex | - | - | - | - |
| 800 | DCCC | octingenti | octingentēsimus | octingenties, octingentiens | octingeni | octingentuplex | - | - | - | - |
| 900 | CM | nōngenti | nōngentēsimus | nōngenties, nōngentiens | nōngeni | nōngentuplex | - | - | - | - |
| 1 000 | M | mile, mille | millēsimus | millies, milies, milliens, miliens | mileni | milliplex | - | - | - | - |
| 2 000 | MM | duo millia | - | - | - | - | - | - | - | - |