Last Updated：2025/11/19

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Used to form temporary names of elements (such as unbiunium) whose existence has been predicted, and have not yet been given a trivial name. / Used to form large numbers as the first in the sequence.

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un-

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Source Word

un-

Prefix

morpheme

Used to form temporary names of elements (such as unbiunium) whose existence has been predicted, and have not yet been given a trivial name. / Used to form large numbers as the first in the sequence.

Japanese Meaning

存在が予測されながらも、まだ正式な命名がなされていない元素の仮称を形成するための接頭辞 / 数列において最初の大きな数字を示すために用いられる接頭辞