Is “Dewar” a Scrabble word?
Yes
DEWAR
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Dewar
/ˈduː.əɹ/
noun
1.A vacuum flask; a vessel which keeps its contents hotter or cooler than their environment without the need to modify the pressure, by interposing an evacuated region to provide thermal insulation between the contents and the environment.
Synonyms: Dewar bulb, Dewar flask, Dewar tube, Dewar vessel, vacuum flask