(physics) Either of two mesons made of a mixture of up, down and strange quarks and their antiquarks

plural of ethic dative

(organic chemistry, automotive) C₅H₁₂O ; an organic compound used to increase octane numbers of gasoline, through added oxygen, as an anti-knock additive

(organic chemistry, automotive) methyl tert-butyl ether

(chemistry) Alternative form of tetraethyl lead

(chemistry, automotive) C₅H₁₂O ; an organic compound used to increase octane ratings of gasoline, through added oxygen

(US) Initialism of Electronic Tax Administration Advisory Committee.

An etymon.

plural of Etruscan bear

A mechanical drawing toy operated by two knobs moving an enclosed stylus horizontally and vertically.