jiffy

名词 n.
中文释义
英 /ˈd͡ʒɪ.fi/    美 /ˈd͡ʒɪ.fi/

英文释义

名词 n.
  1. A very short, unspecified length of time. colloquial
    — I’ll be back in a jiffy.
  2. A unit of time defined by the frequency of its basic timer – historically, and by convention, 0.01 of a second, but some computer operating systems use other values.
    — The FOR...NEXT loop for TIME increments by STEP 2 (every two jiffies) for two reasons: 1) the printing of 60 jiffies a second is too fast to read, and 2) the printing of each jiffy takes longer than its incrementations; this would delay the loop, so the printing of TIME$ is slower than it should be.
  3. The length of an alternating current power cycle (1/60 or 1/50 of a second).
  4. The time taken for light to travel a specified distance in a vacuum, usually one centimetre (approximately 33.3564 picoseconds), but sometimes one foot or the width of a nucleon.
  5. Ellipsis of jiffy bag, a padded envelope. UK,abbreviation,alt-of,ellipsis

词形变化

jiffies plural giffy alternative,obsolete

词汇关系

衍生词
in a jiffy Jiffy bag
相关词
jiffy tummy

词源

Origin unknown; said to have been thieves’ cant for “lightning”. Also formerly written "giffy", to which a connection with gliff has been proposed. As a kind of envelope, a genericization of Jiffy bag.
0 次浏览 数据来源: Wiktionary