Ludolfzahl

German

Etymology

Ludolf (“Ludolph”) +‎ Zahl (“number”) (an irrational constant named after mathematian Ludolph van Ceulen (1540-1610))

Pronunciation

  • IPA(key): [ˈluːdɔlfˌtsaːl]
  • Hyphenation: Lu‧dolf‧zahl

Proper noun

Ludolfzahl f (genitive Ludolfzahl, no plural)

  1. (mathematics) Ludolph's number or Ludolphine number: the number π (an irrational constant representing the ratio of a circle's circumference to its diameter in Euclidean geometry; approximately 3.14159...)
    Synonyms: π, Pi, Archimedes-Konstante, Kreiskonstante, Kreiszahl, ludolfsche Zahl

Declension

Declension of Ludolfzahl [sg-only, feminine]
singular
indef. def. noun
nominative eine die Ludolfzahl
genitive einer der Ludolfzahl
dative einer der Ludolfzahl
accusative eine die Ludolfzahl

Further reading

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