Why is it die Physiologin?

Physiologin ends in -in, and most nouns ending in -in are feminine: in a German dictionary, 88% of them take die.

All nouns ending in -in
Sense 1
die

Meaning

[1] Female physiologist

[1] weiblicher Physiologe

Examples

[1] She is a physiologist

[1] Sie ist Physiologin.

Declension

1 Singular Plural
Nominativ die Physiologin die Physiologinnen
Genitiv der Physiologin der Physiologinnen
Dativ der Physiologin den Physiologinnen
Akkusativ die Physiologin die Physiologinnen

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary