[ thik-uh-ner ]
/ ˈθɪk ə nər /
something that thickens.
an apparatus for the sedimentation and removal of solids suspended in various liquids.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for thickener
Just add methyl cellulose, a thickener that can withstand high temperatures.
It is also useful as a thickener, in a mechanical point of view.A Dictionary of Arts, Manufactures and Mines|Andrew Ure
It may also be used as a thickener in calico-printing and for fining beer.