Thinner

Any volatile liquid used for reducing the viscosity of coatings; may consist of a simple solvent, a diluent, or a mixture of solvents and diluents.
thinner
- a diluting agent
- of relatively small extent from one surface to the opposite or in cross section
- lacking excess flesh
- very narrow
- having little substance or significance
- not dense
- relatively thin in consistency or low in density; not viscous
- (of sound) lacking resonance or volume
- lacking spirit or sincere effort
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• (n.) One who thins, or makes thinner.
Found on http://thinkexist.com/dictionary/meaning/thinner/
Thin'ner noun One who thins, or makes thinner.
Found on http://www.encyclo.co.uk/webster/T/45

A product that lowers the viscosity of a substance, usually an enamel or acrylic paint, to change its application properties. Thinner is used notably for airbrushing a paint, to thin it down and enable it to be atomised.
Found on http://www.encyclo.co.uk/local/20471

Any liquid used to thin the primary coating. Water and oil are the most common thinners in paint and
Found on http://www.encyclo.co.uk/local/22428
No exact match found