IPA: //traɪˈɛθəl//
KK: /ˈtraɪˌɛθəl/
A chemical compound that contains three ethyl groups attached to a central atom or molecule.
Triethyl is often used in organic chemistry as a building block for more complex molecules.
Triethyl is formed from "tri-" (meaning three) and "ethyl" (from Greek "aithylios", meaning related to ethyl alcohol or the ethyl group). The word refers to a compound containing three ethyl groups.
Think of 'tri-' meaning three, and 'ethyl' relating to a specific chemical group. This helps you remember that triethyl refers to a compound with three ethyl groups.