matrass

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mat·rass

(mat'răs),
A long-necked glass vessel used for heating dry substances in chemical manipulations.
[Fr. matras]
Farlex Partner Medical Dictionary © Farlex 2012

matrass

A long-necked piece of laboratory glassware with a spherical base, which is used to heat chemicals in solution.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.