Zehn
Zehn is the German cardinal number for the integer 10. It is used in counting, telling time and dates, and appears in many German phrases and compounds. In mathematics, the number ten is also the basis of the decimal (base-10) numeral system, which in German is called the Dezimalsystem.
Etymology and cognates: The German word zehr derives from the Proto-Germanic word *tehun-, and it is cognate
Usage and forms: Zehn functions as a numeral and may modify a noun, as in zehn Äpfel
See also: In German, other numerals follow similar patterns, and the word is part of everyday usage