noun
rapidity
Rapidity (noun) means speed, swiftness; the condition of being rapid.
noun
1
speed, swiftness; the condition of being rapid
2
A measure of velocity relative to the speed of light; defined as artanh(v), where artanh is the hyperbolic arctangent, and v = speed (with c = speed of light = 1).
3
A measure of the velocity of a particle in a beam relative to the beam's axis
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Etymology
From rapid + -ity, from French rapidité, from Latin rapiditas.
Rhymes for rapidity
See all rhymes for rapidity →Frequently asked questions
What is the meaning of rapidity?
"rapidity" (noun) means speed, swiftness; the condition of being rapid.
What are the different meanings of rapidity?
"rapidity" has 3 main meanings: 1. speed, swiftness; the condition of being rapid; 2. A measure of velocity relative to the speed of light; defined as artanh(v), where artanh is the hyperbolic arctangent, and v = speed (with c = speed of light = 1); 3. A measure of the velocity of a particle in a beam relative to the beam's axis.