proteasome

noun

Etymology: Etymology tree English prote(in) Proto-Indo-European *dwóh₁ Proto-Indo-European *dwísder. Ancient Greek διά (diá) Ancient Greek δῐᾰ- (dĭă-) Proto-Indo-European *steh₂- Proto-Indo-European *stísteh₂ti Proto-Hellenic *hístāmi Ancient Greek ῐ̔́στημῐ (hĭ́stēmĭ) Ancient Greek δῐῐ̈́στημῐ (dĭĭ̈́stēmĭ) Ancient Greek δῐᾰ́στᾰσῐς (dĭắstăsĭs) English diastase English -ase English protease English -some English proteasome From protease + -some.

1. A complex protein, found in bacterial, archeal and eukaryotic cells, that breaks down other proteins via proteolysis.