) KEY NOUN: pl. ve·loc·i·ties
- Rapidity or speed of motion; swiftness.
- Physics A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
- The rate of speed of action or occurrence.
- The rate at which money changes hands in an economy.
Middle English velocite
, from Old French, from Latin vlcits
, from vlx, vlc-
; see weg-
in Indo-European roots