The kanji character 透 primarily conveys the concept of "transparency," "permeation," or "penetration." It describes the ability of something to allow light, liquids, or other substances to pass through it. It can also imply the idea of "seeing through" or understanding something clearly. The core meaning focuses on the idea of something being clear, unobstructed, and allowing passage.

・On-yomi (音読み): トウ (tō) ・Kun-yomi (訓読み): す(ける) (su(keru), to make transparent), す(かす) (su(kasu), to look through)

⚫︎透明 (とうめい) Translation: Transparency; Transparent ⚫︎透き通る (すきとおる) Translation: To be transparent; to be clear ⚫︎見透かす (みすかす) Translation: To see through; to fathom; to read someone's mind

The kanji 透 is a phono-semantic compound (形声文字, けいせいもじ). The semantic component is 辶, the "walking" radical (also written as しんにょう), which implies movement or going through. The phonetic component is 秀, which gives the sound トウ (tō). The original meaning likely depicted something going through something else, like water permeating through a surface or light shining through a gap. Over time, it expanded to include the concepts of transparency and seeing through.