Why is it die Dermatologie?

Dermatologie ends in -ie, and nouns ending in -ie are feminine: in a German dictionary, 98% of them take die.

All nouns ending in -ie
Sense 1
die

Meaning

[1] Medicine: The teaching of skin diseases

[1] Medizin: die Lehre von den Hautkrankheiten

Examples

[1] Dermatology is an important component of our medicine

[1] Die Dermatologie ist ein wichtiger Baustein unserer Medizin.

Declension

1 Singular Plural
Nominativ die Dermatologie —
Genitiv der Dermatologie —
Dativ der Dermatologie —
Akkusativ die Dermatologie —

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary