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Webster 1913 Edition

Noun.

[

Aëro-

-metry

: cf. F.

érométrie

The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics.

Noun.

[as above.] The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation.

Rather, aerometry is the art or science of ascertaining the mean bulk of the gases.

aerometry ‎(uncountable)

the science of measuring the air