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thinner

1
[ thin-er ]
/ ˈθɪn ər /
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noun

a volatile liquid, as turpentine, used to dilute paint, varnish, rubber cement, etc., to the desired or proper consistency.
a person who adds thinners to paints, varnishes, etc.
a person who specializes in weeding plants, pruning shrubbery, thinning fruit, etc.

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Origin of thinner

1
First recorded in 1825–35; thin + -er1

Definition for thinner (2 of 2)

thinner2
[ thin-er ]
/ ˈθɪn ər /

adjective

comparative of thin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for thinner

thinner
/ (ˈθɪnə) /

noun

(often plural, functioning as singular) a solvent, such as turpentine, added to paint or varnish to dilute it, reduce its opacity or viscosity, or increase its penetration into the ground
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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