pi

名词 n. 动词 v. 形容词 adj.
中文释义

英文释义

名词 n.
  1. The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek. countable,uncountable
  2. Metal type that has been spilled, mixed together, or disordered. countable,uncountable
  3. pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch).
  4. An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265. countable,uncountable
  5. Piaster.
动词 v.
  1. To spill or mix printing type.
形容词 adj.
  1. Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type. not-comparable
    — In computing, pi characters may be entered with special key combinations.
  2. Pious.
    — Our Major was "Cherub" Cheeseman, noted for his foul language. I am afraid he lost a tidy little legacy that he was expecting from his aunt, the Dowager Lady Shuttlecock (a very "pi" old lady), through this same habit of his.

词形变化

pis plural pis plural pies present,singular,third-person piing participle,present pied participle,past pied past

词汇关系

衍生词
pi bond piem pi font pi-heptomino pilish pi meson pi-minus pion piphilology pi-plus pi-system pith

词源

词源 1
From Koine Greek πῖ (pî), from Ancient Greek πεῖ (peî), ultimately from Proto-Semitic *pay- (“mouth”). Doublet of pe. Its mathematical use apparently stems from its use as the first letter in περιφέρεια (periphéreia, “periphery; circumference”) and was first cited in 1706 in the Synopsis Palmariorum Matheseos by William Jones.
词源 2
Unclear. Possibly from the Greek letter (see Etymology 1) as a common example of non-alphabetic character, possibly from pica (“type size”) (see Etymology 3), possibly from pie referring to its mixed nature or pied (“checkered, multicoloured”).
词源 3
Abbreviations.
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