D defs.my
Entry 1 sense Webster, 1913

Isopiestic

· I·so·pi·es·tic · IPA
01 a. Having equal pressure.
  1. 1.
    Having equal pressure.(Thermodynamics)
Phrases & compounds
Isopiestic lines — lines showing, in a diagram, the relations of temperature and volume, when the elastic force is constant; -- called also isobars.