subhuman; demi-human
Refers to a being that is partly human or less than human, often used in fantasy, science fiction, or derogatory contexts.
そのファンタジー小説には、エルフやドワーフなどの亜人が登場する。
In that fantasy novel, demi-humans such as elves and dwarves appear.
彼は敵を亜人と呼んで侮辱した。
He insulted the enemy by calling them subhuman.
Argentinian (person)
Rare abbreviation of アルゼンチン人. Not in common use; learners should use アルゼンチン人 instead.
See also: アルゼンチン人
Archaic abbreviation of アメリカ人. No longer used; modern Japanese uses アメリカ人.
See also: アメリカ人
It is extremely rare for 亜人 to be used as an abbreviation for Argentinian.
In old documents, 亜人 can mean American, but it is no longer used.