rapidity

CET-4

n. 迅速, 急速, 速度

发音

其它 /ɹəˈpɪd.ɪ.ti/
IN /ˈræ.pɪ.ɖɪ.ʈi/

词形变化

rapidities 复数 rapidities

释义与例句

n.
  1. 1.

    speed, swiftness; the condition of being rapid

    可数 不可数
  2. 2.

    A measure of velocity relative to the speed of light; defined as artanh(v), where artanh is the hyperbolic arctangent, and v = speed (with c = speed of light = 1).

    可数 不可数
  3. 3.

    A measure of the velocity of a particle in a beam relative to the beam's axis

    可数 不可数 物理

词汇关系

名词

同义词 4

celerity quickness rapidness speediness

上位词 2

rate pace

下位词 10

expedition dispatch immediacy despatch expeditiousness fleetness immediateness instancy instantaneousness promptitude

词源

From rapid + -ity, from French rapidité, from Latin rapiditas.

来源：wiktionary