[COUNTER- 3, 6.] Opposite or contrary pressure.

1

1651.  Hobbes, Leviath., I. i. 3. A resistance, or counter-pressure.

2

1787.  Hunter, in Phil. Trans., LXXVII. 419. The pressure being much greater on the external surface than the counter-pressure from within.

3

1852–9.  Todd, Cycl. Anat., IV. 1040/2. The counter-pressure of the atmosphere in the thorax.

4