LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

amerī̆canus

amerī̆canus (feminine amerī̆cana, neuter amerī̆canum)
Classical[a.mɛ.riːˈkaː.nʊs]Ecclesiastical[a.me.riˈkaː.nus]

Meaning

  1. New LatinadjectiveAmerican; of or pertaining to America (i.e. the Americas)
    America in ſeptentrionalem, Auſtralem & Insulas Americanas diſtribuitur.1723, Gervas Ludovicus Nicolaus de Oskierka, Theses ex universa philosophia quas ad majorem Dei gloriam & magnae Dei Matris Virginis Mariae honorem praeside R. P. Marquardo Rotenhan Societ. Jesu, Heidelberga (Heidelberg), section Continuatio globi terra quei in suas partes divisi, p.13

Declension

singular
formmasculinefeminineneuter
nominativeamerī̆cānusamerī̆cānaamerī̆cānum
genitiveamerī̆cānīamerī̆cānaeamerī̆cānī
dativeamerī̆cānōamerī̆cānaeamerī̆cānō
accusativeamerī̆cānumamerī̆cānamamerī̆cānum
ablativeamerī̆cānōamerī̆cānāamerī̆cānō
vocativeamerī̆cāneamerī̆cānaamerī̆cānum
plural
formmasculinefeminineneuter
nominativeamerī̆cānīamerī̆cānaeamerī̆cāna
genitiveamerī̆cānōrumamerī̆cānārumamerī̆cānōrum
dativeamerī̆cānīsamerī̆cānīsamerī̆cānīs
accusativeamerī̆cānōsamerī̆cānāsamerī̆cāna
ablativeamerī̆cānīsamerī̆cānīsamerī̆cānīs
vocativeamerī̆cānīamerī̆cānaeamerī̆cāna

Origins

  1. Proto-Indo-European*h₃emh₃-
  2. Proto-Germanic*amalą
  3. Proto-Indo-European*h₃reǵ-
  4. Proto-Indo-European*h₃rḗǵs
  5. Latinamerī̆canus

Proto-Celtic *rīxsbor. Proto-Germanic *rīks Proto-Germanic *Amalarīksder. Proto-Indo-European *ḱey- Proto-Indo-European *-mos Proto-Indo-European *ḱóymos Proto-Indo-European *teḱ- Proto-Indo-European *-éyti Proto-Indo-European *tḱéytibf. Proto-Indo-European *tḱey- Proto-Indo-European *-mos Proto-Indo-European *tḱóymos Proto-Germanic *haimaz ▲ Proto-Germanic *rīks Proto-Germanic *Haimarīksder.? Italian Amerigoder. Latin Amerī̆ca Proto-Indo-European *-nós Proto-Italic *-nos Proto-Italic *-ānos Latin -ānus Latin amerī̆canus From Amerī̆ca + -ānus (“-an”).

Quick answers

What does amerī̆canus mean in Latin?
amerī̆canus, a adjective, means “American; of or pertaining to America (i.e. the Americas)”.
How do you pronounce amerī̆canus?
In classical Latin, [a.mɛ.riːˈkaː.nʊs]; in ecclesiastical (church) Latin, [a.me.riˈkaː.nus].
Where does amerī̆canus come from?
Proto-Indo-European *h₃emh₃- → Proto-Germanic *amalą → Proto-Indo-European *h₃reǵ- → Proto-Indo-European *h₃rḗǵs → Latin amerī̆canus.