German Conversation · Level 3
88 words
German word
Pi
Pronunciation
IPA/piː/
Meaning
- neuter nounpi
Example
Viele Formeln nutzen den Wert des Pi.
Many formulas use the value of pi.
More examples
Der Umfang eines Kreises beträgt 2·Pi·r.
The circumference of a circle is 2*pi*r.
Core concept
A circle viewed as a measuring device that always produces the same number when its outer distance is compared with its straight width.
Common phrases
der Wert von Pi
the value of pi
die Kreiszahl Pi
the circle constant pi
Similar words
Kreiszahl: A mathematical term for the number given by a circle's circumference-to-diameter ratio.
Irrationalzahl: A number whose exact value cannot be written as a fraction and whose decimals never end.
Definition in German
Pi ist die mathematische Konstante, die das Verhältnis des Kreisumfangs zum Durchmesser beschreibt; ihr Wert liegt ungefähr bei 3,14159.
Word origin
The noun Pi is named after the Greek letter pi; the symbol entered mathematical use for this constant in the early eighteenth century and spread through Euler's work.
Usage tips
- Pi is neuter in German, so the standard form is das Pi, although die Zahl Pi is also very common.