Last Updated
：2026/01/11
埃
Hiragana
あい
Noun
Japanese Meaning
ちり。ほこり。空気中に浮遊したり、物の表面に付着する微細なごみや粉末状の物質。 / 取るに足らない、きわめて小さい存在のたとえ。 / （補足）英語の “one ten-billionth” は、日本語では「100億分の1」を意味するが、これは「埃」という語の本来の意味ではなく、「きわめて小さい量・程度」を比喩的に表した説明と考えられる。
Easy Japanese Meaning
こまかいちり。くうきやへやにういて、ものの上にたまる。
Chinese (Simplified) Meaning
长度单位，等于10^-10米（约0.1纳米）
Chinese (Traditional) Meaning
長度單位「埃」（Å），等於10^-10公尺 / 公尺的百億分之一
Korean Meaning
미터의 100억분의 1(10^-10 m)을 나타내는 길이 단위 / 100억분의 1
Indonesian
satu per sepuluh miliar (10^-10) / ångström (Å), satuan panjang setara 10^-10 meter
Vietnamese Meaning
đơn vị độ dài ăngstrôm (10^-10 m) / một phần mười tỷ (10^-10)
Tagalog Meaning
yunit ng haba na katumbas ng 10^-10 metro (ångström) / isang sampu-bilyong bahagi ng metro
Sense（1）
one ten-billionth
（ romanization ）
（ hiragana ）
Quizzes for review
See correct answer
This room is so clean that there isn't even one ten-billionth of dust.
This room is so clean that there isn't even one ten-billionth of dust.
See correct answer
この部屋は埃が一つでもないほどきれいです。
Japanese - English
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