'anarthrous' originates from Greek, specifically the word 'anarthros,' where 'an-' meant 'without' and 'arthron' meant 'joint' or 'article.'

'anarthros' was adopted into Late Latin as 'anarthrus,' and eventually became the modern English word 'anarthrous.'

Initially, it meant 'without joints,' but over time it evolved into its current linguistic meaning of 'without an article.'