| Hales' piesimeter | A glass tube inserted into an artery at right angles to its axis, the pressure being shown by the height to which the blood ascends in the tube. (05 Mar 2000) |
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| piesimeter | An instrument for measuring the pressure of a gas or a fluid. Synonym: piezometer. Origin: G. Piesis, pressure (05 Mar 2000) |
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| Hales, Stephen | <person> English physiologist, 1677-1761. See: Hales' piesimeter. (05 Mar 2000) |