融解（ゆうかい、yuukai）
- melting

The Japanese word 融解 （ゆうかい; *yuukai*） means "melting" or "dissolving." It describes the process where a solid substance changes into a liquid form due to heat. It can also refer to the dissolving of a substance into a liquid. The word implies a gradual change, not a sudden explosion. It is a more formal and scientific term.

⚫︎氷が融解し始めた。 Translation: The ice started to melt. ⚫︎金属を融解して、新しい形にした。 Translation: The metal was melted and formed into a new shape. ⚫︎砂糖が水に融解した。 Translation: The sugar dissolved in the water.

This word is used in scientific contexts, when describing natural phenomena (like ice melting), or when discussing industrial processes. You would use 融解 （ゆうかい; *yuukai*） when you want to be precise and formal in your description of melting or dissolving. In everyday conversation, other words like 溶ける (*tokeru*, to melt) may be more commonly used.

The word 融解 （ゆうかい; *yuukai*） is typically written with the kanji 融解. The reading is ゆうかい in hiragana. There is no other common way to write this. The *okurigana* (the hiragana suffix) is *kai*.

⚫︎溶ける (*tokeru*) - to melt, dissolve (more general, used in daily conversation) ⚫︎溶解 (*youkai*) - dissolution (similar scientific meaning to 融解 but more emphasis on dissolving)

⚫︎凝固 (*gyouko*) - solidifying, congealing ⚫︎凍結 (*touketsu*) - freezing

地球温暖化によって、北極の氷が加速的に融解している。 ・Translation: Due to global warming, the Arctic ice is melting rapidly. ・Explanation: This sentence illustrates the use of 融解 （ゆうかい; *yuukai*） in a scientific and environmental context, describing the melting of ice.

その実験では、金属を高温で融解させて形状を変化させた。 ・Translation: In that experiment, they melted the metal at high temperatures and changed its shape. ・Explanation: This example explains how 融解 （ゆうかい; *yuukai*） is used in an experimental or industrial setting.

The word 融解 （ゆうかい; *yuukai*） is composed of two kanji. 融 (yū) means "to melt," "to blend," or "to fuse." 解 (kai) means "to dissolve," "to unravel," or "to understand." Together, they combine to express the concept of melting or dissolving.