eighteen etymology

Etymology:

Old English "eahtatyne," from "eaht" (eight) + "tiene" (ten).

Meaning:

A cardinal number, one more than seventeen and one less than nineteen.

Origin:

The word "eighteen" has its origins in Proto-Germanic, where it was "ahtautīhun" or "ahtutaini." These terms were derived from the Proto-Indo-European numerals "h4eḱtṓm" (eight) and "déḱm" (ten).

The Old English form "eahtatyne" underwent sound changes over time, with the "a" in "eaht" becoming pronounced as "ei" and the "tyne" becoming simplified to "teen."

Usage:

• Eighteen is used to represent the number 18, as in "There are eighteen students in the class."
• It can also be used in compound words, such as "eighteen-year-old" (a person who is 18 years old) or "eighteenth" (ordinally, the eighth in a series).
• In some contexts, "eighteen" may be used to refer to a group or collection of 18 people or things, as in "a group of eighteen hikers."

eighteen relate terms

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