411 REFERENCE · Wiktionary
Ludolfzahl
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
German
Etymology
de Ludolf Zahl Ludolph number an irrational constant named after mathematician Ludolph van Ceulen (1540-1610)
Pronunciation
de [ˈluːdɔlfˌtsaːl]
de Lu dolf zahl
Proper noun
f.sg
de 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...
de mul:π Pi Archimedes-Konstante Kreiskonstante Kreiszahl ludolfsche Zahl
Declension
f.sg
Further reading