Isobaric

In science, isobaric, from iso-, meaning “equal, homogeneous, uniform”, + -baros, meaning “weight” (Waser, 1966), or "isopiestic", refers to processes or reactions that occur at constant pressure.

Overview
In isobaric processes or reactions the following differential results:

dP = 0

meaning that differential changes in pressure P in the system do not occur. The term ‘isobaric’, supposedly, was first used in 1878. [1]

References
1. (a) (b) Waser, Jurg. (1966). Basic Chemical Thermodynamics (pg. 12). W.A. Benjamin, Inc.
(b) Merriam-Webster Collegiate Dictionary.

External links
‚óŹ Isobaric process – Wikipedia.

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