Why is it der Rotor?

Rotor ends in -or, and almost all nouns ending in -or are masculine: in a German dictionary, 93% of them take der.

All nouns ending in -or
Sense 1
der

Meaning

[1] rotating part of a machine

[1] rotierendes Teil einer Maschine

Examples

[1] helicopter flying with rotorean

[1] Hubschrauber fliegen mit Rotoren.

Declension

1 Singular Plural
Nominativ der Rotor die Rotoren
Genitiv des Rotors der Rotoren
Dativ dem Rotor den Rotoren
Akkusativ den Rotor die Rotoren

Pronunciation

In context

Dictionary entries include material from Wiktionary. Wiktionary