Where does “twincam” come from?

twincam (English) comes from English Cam, from English camera, from New Latin camera obscura, from Latin camera, from Ancient Greek καμάρα, from Proto-Iranian kamarā-, from Proto-Iranian kamárati, from Proto-Indo-Iranian *kmárati — to bend, to curve.

twincam (English): A type of sports car engine that has two overhead camshafts within the cylinder head, resulting in more horsepower than a standard single cam engine

Definitions

  1. A type of sports car engine that has two overhead camshafts within the cylinder head, resulting in more horsepower than a standard single cam engine

Ancestry of “twincam”, step by step

twincam traces back through two separate lines of ancestry.

via English Cam

StepLanguageWordMeaning
1EnglishCamwhich passes through Cambridge and joins the Great Ouse
2EnglishcameraA device for taking still or moving pictures or...
3New Latincamera obscuradark chamber
4LatincameraA chamber in its various senses, "including";...
5Ancient GreekκαμάραAnything with an arched cover such as a covered...
6Proto-Iraniankamarā-something curved
7Proto-Iraniankamárati
8Proto-Indo-Iranian*kmárati
9Proto-Indo-Europeankh₂em-to bend, to curve

via English twin

StepLanguageWordMeaning
1EnglishtwinEither of two people who shared the same uterus...
2Middle Englishtwin
3Old Englishtwīndouble thread, twist, twine, linen-thread, linen
4Proto-West Germanictwiʀntwine, double thread
5Proto-Germanictwiznazthread, twine
6Proto-Indo-Europeandwisnósdouble
7Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European kh₂em-