透
transparent, permeate, filter, penetrate
Readings
On'yomi
- トウ
Kun'yomi
- す.く
- す.かす
- す.ける
- とう.る
- とう.す
Nanori
- とおる
Meaning
透 centers on the idea of passing through a barrier or medium: light passing through something transparent, liquid permeating a material, or filtering out impurities. The core is movement across or into a substance.
Most common words using 透
20 of 122- 透明とうめいN2
transparent; clear
- 透けるすける
to be transparent; to show through
- 浸透しんとう
permeation (of thought, ideology, culture, etc.); infiltration (e.g. of ideas); spread; penetration (e.g. into a market); pervasion
- 透過とうか
penetration; permeation; transmission
- 透視とうし
seeing through
- 不透明ふとうめいN1
opaque; obscure; murky; turbid
- 透析とうせき
dialysis
- 透け透けすけすけ
see-through; sheer
- 透かしすかし
watermark (in a stamp, banknote, etc.)
- 透き通るすきとおるN2
to be transparent; to be see-through; to be clear
- 肩透かしかたすかし
under-shoulder swing-down; technique of grasping the arm of the opponent, the moment he comes forward, while stepping out of line and pushing down on the shoulder blade with the other hand, thus pulling him down
- 透水とうすい
permeation (e.g. of water); percolation; seepage
- 明け透けあけすけ
open; frank; outspoken; unreserved; straightforward; honest
- 人工透析じんこうとうせき
(artificial) dialysis
- 見透かすみすかす
to see through (a lie, scheme, etc.); to see into (someone's mind); to read (someone's true feelings); to penetrate
- 透徹とうてつ
transparency
- 半透明はんとうめいN2
semi-transparent; translucent
- コード透過形データ通信コードとうかがたデータつうしん
code-transparent data communication
- データ回線透過性データかいせんとうかせい
data circuit transparency
- 不透明度ふとうめいど
opacity
Study
Etymology
透 combines 辶 (movement) with 秀, which likely contributes the sound and the idea of something emerging or passing through. The exact historical development of 秀 within this character is uncertain.
Meaning mnemonic
The movement radical 辶 wraps around 秀, like something traveling through a passage. Imagine light moving through a clear window: it permeates and makes things visible.
Reading mnemonic
For トウ, picture a transparent toe sock that lets your toes show through: toe -> トウ, and the fabric is so thin it's almost transparent.