Where does “bicameralismo” come from?

bicameralismo (Portuguese) comes from Portuguese bicameral, from Portuguese câmera, from Portuguese câmara, from Old Portuguese camara, from Vulgar Latin camara, from Latin camera, from Ancient Greek καμάρα, from Proto-Iranian kamarā- — to bend, to curve.

Ancestry of “bicameralismo”, step by step

StepLanguageWordMeaning
1Portuguesebicameralbicameral having two separate legislative chambers
2Portuguesecâmeracamera; chamber
3Portuguesecâmarachamber; council; camera
4Old Portuguesecamararoom, chamber
5Vulgar LatincamaraAlternative spelling of camera; second-person...
6LatincameraA chamber in its various senses, "including";...
7Ancient GreekκαμάραAnything with an arched cover such as a covered...
8Proto-Iraniankamarā-something curved
9Proto-Iraniankamárati
10Proto-Indo-Iranian*kmárati
11Proto-Indo-Europeankh₂em-to bend, to curve
Every word from Proto-Indo-European kh₂em-Every word from Proto-Indo-Iranian *kmáratiEvery word from Proto-Iranian kamárati