velocity

Từ điển WordNet v3.1 - WordNet Dictionary

noun

distance travelled per unit time (Freq. 21)
• Syn:
speed
• Derivationally related forms:
speedy (for: speed), speed (for: speed)
• Hypernyms:
rate
• Hyponyms:
angular velocity, airspeed, escape velocity, groundspeed, hypervelocity,
muzzle velocity, peculiar velocity, radial velocity, speed of light, light speed, c,
steerageway, terminal velocity