( n. )
The quality or state of being rapid; swiftness; celerity; velocity; as, the rapidity of a current; rapidity of speech; rapidity of growth or improvement.
( n. )
The quality or state of being rapid; swiftness; celerity; velocity; as, the rapidity of a current; rapidity of speech; rapidity of growth or improvement.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012