ISEE/SSAT Vocabulary Builder›Words›T›thermos
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thermos
a container that keeps liquids hot or cold for a long time
Synonyms
- flask
thermos in a sentence
She packed a thermos of hot cocoa for the long ski trip.
Hiking deep into the canyon at dawn, the ranger carried a dented thermos that kept her tea steaming hot for hours.
Where it comes from
From Greek therme 'heat'
Memory hook
THERMos — THERM (heat, from Greek therme) — keeps drinks at the right THERMal level.
Word parts
- therm — heat
thermos: therm (heat) + -os (adjective ending, 'hot')
Read it in context
- The Singing Span Science