- hexaethyl tetraphosphate
- \\|heksə+...-\ noun
Etymology: hexa- + ethyl: an insecticide (C2H5)6P4O13 obtained synthetically usually as a yellow liquid mixture containing tetraethyl pyrophosphate — called also HETP
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/hek'seuh eth"euhl/a yellow, very poisonous liquid, (C2H5O)6P4O7, soluble in water, used as an insecticide. Also called HETP[1945-50; HEXA- + ETHYL]
Useful english dictionary. 2012.