Why is it die Arthrose?

Arthrose ends in -ose, and nouns ending in -ose are feminine: in a German dictionary, 97% of them take die.

All nouns ending in -ose
Sense 1
die

Meaning

[1] Medicine: degenerative bone disease

[1] Medizin: degenerative Knochenerkrankung

Examples

[1] "The arthrosis favored by lack of movement are among the most common reasons why older people must have to go to the nursing home"

[1] „Die durch Bewegungsmangel begünstigten Arthrosen gehören zu den häufigsten Gründen, warum ältere Menschen ins Pflegeheim müssen.“

Declension

1 Singular Plural
Nominativ die Arthrose die Arthrosen
Genitiv der Arthrose der Arthrosen
Dativ der Arthrose den Arthrosen
Akkusativ die Arthrose die Arthrosen

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary