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| Date: | 1300-1400 |
| Language: | Late Latin |
| Origin: | viscosus, from Latin viscum 'mistletoe, sticky substance used for catching birds' |
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vis‧cous
technical a viscous liquid is thick and sticky and does not flow easily : 
As the liquid cools, it becomes viscous.
As the liquid cools, it becomes viscous. —viscosity noun [uncountable]
noun [uncountable]