411 REFERENCE · Wiktionary
Kreiszahl
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
German
de:
Etymology
de :af Kreis<t:circle> Zahl<t:number>
de Kreis Zahl circle number
Pronunciation
de /ˈkraɪ̯sˌtsaːl/
de De-Kreiszahl.ogg <<Germany>> (<<Berlin>>)
de Kreis zahl
Noun
f.sg
de mathematics the number mul π a transcendental number representing the ratio of a circle's circumference to its diameter in Euclidean geometry; approximately 3.14159...
de mul:π Pi Archimedes-Konstante Kreiskonstante ludolfsche Zahl Ludolfzahl
Declension
f.sg
Further reading