ˈte.trə̇l noun
( -s )
Etymology: International Scientific Vocabulary tetra- + -yl
: a pale yellow crystalline explosive (NO 2 ) 3 C 6 H 2 N(CH 3 )NO 2 obtainable by nitrating dimethylaniline or methylaniline and used especially as a detonator; methyl-picryl-nitramide — called also trinitrophenylmethylnitramine