Explore Words Kanji Grammar Guides

Copyright © 2026 Kotomora. All Rights Reserved.

Get the Kotomora apps for iOS and Android.

Explore Words Kanji Grammar Guides About Support Privacy

Copyright © 2026 Kotomora. All Rights Reserved.

希土類元素 (きどるいげんそ) Japanese meaning | Kotomora

希き土ど類るい元げん素そ

き

ど

る

い

げ

ん

そ

Meanings

1

rare-earth element; rare-earth metal

Chemistry term for the lanthanide series plus scandium and yttrium.

希き土ど類るい元げん素そはハイテク製せい品ひんに

不ふ

可か

欠けつ

だ

。

Rare-earth elements are essential for high-tech products.

ネオジムは希き土ど類るい元げん素その一ひとつです。

Neodymium is one of the rare-earth elements.

Kanji

希hope, beg, request
土soil, earth, ground
類sort, kind, variety
元beginning, former time, origin
素elementary, principle, naked
稀rare, phenomenal, dilute (acid)

Related words

レアアース
Common loanword for 'rare earth', often used in industrial contexts; 希土類元素 is the formal chemical term.

Built from

希き土ど類るい+元げん素そ

Written forms

希き土ど類るい元げん素そ
Standard kanji spelling for 'rare-earth element'.
稀き土ど類るい元げん素そ
Variant spelling using 稀 (rare) instead of 希; less common.

Etymology

Compound of 希土類 (rare earths) + 元素 (element). 希土類 is a calque from English 'rare earth'.