| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024ve•loc•i•ty /vəˈlɑsɪti/USA pronunciation n. [countable], pl. -ties. - rapidity or speed of motion, action, or operation;
swiftness;
speed:the velocity of light.
WordReference Random House Unabridged Dictionary of American English © 2024ve•loc•i•ty (və los′i tē),USA pronunciation n., pl. -ties. - rapidity of motion or operation;
swiftness;
speed:a high wind velocity. - Mechanicsthe time rate of change of position of a body in a specified direction.
- the rate of speed with which something happens;
rapidity of action or reaction.
- Latin vēlōcitās speed. See velocipede, -ty2
- 1540–50
- 1.See corresponding entry in Unabridged See speed.
Collins Concise English Dictionary © HarperCollins Publishers:: velocity /vɪˈlɒsɪtɪ/ n ( pl -ties)- speed of motion, action, or operation; rapidity; swiftness
- a measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time. It is measured in metres per second, miles per hour, etc
Symbol: u,
Symbol: v,
Symbol: w - (not in technical usage) another word for speed
Etymology: 16th Century: from Latin vēlōcitās, from vēlōx swift; related to volāre to fly |