thimerosal is a modern chemical name constructed from clipped forms of its constituent parts. the first element, 'thi-', references the sulfur atom in its thiosalicylate component, tracing back to the greek word for sulfur. the middle segment, '-mer-', is a direct abbreviation of 'mercury', the metallic element at its core, named for the roman deity. the final part, '-sal', abbreviates 'salicylate', derived from the latin for willow, the plant from which related compounds were first isolated. thus, the name literally and logically denotes a 'mercury-containing compound of thiosalicylic acid,' a transparent descriptor for its chemical composition.

Structure: thi (sulfur) + mer (mercury) + sal (salicylate) - thi: from international scientific vocabulary, based on 'thio-', denoting sulfur, from greek 'theion' (sulfur). - mer: a clipped form from 'mercury', from latin 'mercurius', the roman god and the planet, later applied to the liquid metal. - sal: a clipped form from 'salicylate', a salt or ester of salicylic acid, from latin 'salix' (willow tree, the original source of salicylic acid).