variants or less commonly matras or mattrass
plural -es
: a rounded glass flask with a long neck formerly used for dissolving substances by the application of heat or for distilling

called also bolt head

Word History


French matras tall bottle, from Middle French, from matras arrow, from Latin matara javelin, from Gaulish; probably akin to Latin metiri to measure

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Dictionary Entries Near matrass

Cite this Entry

“Matrass.” Dictionary, Merriam-Webster, Accessed 29 Feb. 2024.

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