different between velocity vs aerothermodynamics

English

veloce +? -ity, from Middle French vélocité, from Latin v?l?cit?s (“speed”), from v?l?x (“fast”).

velocity (countable and uncountable, plural velocities)

(physics) A vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component.
Rapidity of motion.
The rate of occurrence.
(economics) The number of times that an average unit of currency is spent during a specific period of time.

aero- +? thermodynamics

aerothermodynamics (uncountable)

(physics) The scientific study of the thermodynamic properties of gases, especially when travelling at a high velocity.

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