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单词 free fall
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈfree ˈfall, n. [uncountable]
  1. Aeronauticsthe fall of a body such that the only force acting upon it is gravity.

WordReference Random House Unabridged Dictionary of American English © 2024
free fall, 
    1. Aeronauticsthe hypothetical fall of a body such that the only force acting upon it is that of gravity.
    2. Sportthe part of a parachute jump that precedes the opening of the parachute.
    3. Aeronauticsa decline, esp. a sudden or rapid decline, as in value or prestige, that appears to be endless or bottomless:The economy was in a free fall all winter.
    Also, free-fall (for defs. 1, 2).
    • 1915–20

free-fall  (frēfôl′),USA pronunciation v., -fell, -fall•en, -fall•ing, adj., n. 
v.i. 
  1. Aeronautics, Sport(of parachutists) to descend initially, as for a designated interval, in a free fall:The jumpers were required to free-fall for eight seconds.

adj. 
  1. Aeronauticsdenoting or suggesting a free fall:a free-fall recession.

n. 
  1. free fall (defs. 1, 2).

Collins Concise English Dictionary © HarperCollins Publishers::
free fall n
  1. free descent of a body in which the gravitational force is the only force acting on it
  2. the part of a parachute descent before the parachute opens
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更新时间:2025/2/23 10:46:54