Ischias

Borrowed from Ancient Greek ἰσχιάς (iskhiás, “hip disease”), from ἰσχίον (iskhíon, “hip joint”).

• IPA^(key): /ˈɪʃi̯as/

Ischias f or m or n (genitive Ischias, no plural)

1. (pathology, neurology) sciatica (neuralgia of the sciatic nerve)
2. sciatic nerve

• Ischias is one of a small number of German nouns which can or historically could have all three genders; see the appendix.
• The word is feminine in technical usage and usually masculine (more rarely neuter) in colloquial usage.

• (sciatica): Ischialgie
• (sciatic nerve): Ischiasnerv

• Ischias in Duden online