(medicine) Initialism of behind the ear.

(physics, uncountable) Initialism of Boltzmann transport equation. / (medicine, countable) A behind the ear hearing aid.

plural of BTE

Initialism of benzene, toluene, ethylbenzene, and ortho-, meta-, and para- xylenes: toxic VOCs commonly found together, used in the chemical analysis of air and water to determine their quality and purity.

Initialism of Business and Technology Education Council, a vocational qualification in the United Kingdom.

plural of BTEC