溶解・熔解・鎔解|ようかいyoukai[0]heiban (flat)

Common
Which spelling to use
溶解溶解 is the most common form and the recommended choice for beginners; use it when writing the word.
熔解熔解 is a rarely used kanji variant of 溶解. You may encounter it, but choose 溶解 instead when writing the word.
鎔解鎔解 is a rarely used kanji variant of 溶解. You may encounter it, but choose 溶解 instead when writing the word.
Definitions
  1. noun, suru verb, transitive verb, intransitive verbdissolution; dissolving; solution (e.g. chemical)
    空気くうき中ちゅうの酸素さんそは水みずに溶解ようかいする。↗
    Oxygen from the air dissolves in water.
  2. noun, suru verb, transitive verb, intransitive verbmelting; liquefying; fusion
Conjugation
Dictionary form溶解する(ようかいする)
Polite (masu)溶解します(ようかいします)
Negative (nai)溶解しない(ようかいしない)
polite (masen)溶解しません(ようかいしません)
classical zu / nu溶解せず・溶解せぬ(ようかいせず・ようかいせぬ)
Past (ta)溶解した(ようかいした)
polite (mashita)溶解しました(ようかいしました)
Past negative (nakatta)溶解しなかった(ようかいしなかった)
polite (masen deshita)溶解しませんでした(ようかいしませんでした)
Te form溶解して(ようかいして)
Potential溶解できる(ようかいできる)
Passive溶解される(ようかいされる)
Causative溶解させる(ようかいさせる)
Causative passive溶解させられる(ようかいさせられる)
Conditional (ba)溶解すれば(ようかいすれば)
tara溶解したら(ようかいしたら)
Volitional溶解しよう(ようかいしよう)
polite (mashou)溶解しましょう(ようかいしましょう)
Imperative溶解しろ(ようかいしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym溶けるとけるNeutralIntransitive verb for melting or dissolving; the everyday default, used in speech and writing alike, while 「溶解」 is a technical Sino-Japanese noun.
  • Synonym溶かすとかすNeutralTransitive verb for dissolving or melting something; the agent can be a person, heat, acid and so on.
  • Synonym熔けるとけるNeutralVerb for metals melting under heat; applies only to metals and never to dissolving in a liquid.
  • Synonym融解ゆうかいWrittenWritten word for a solid turning to liquid under heat, like melting ice; stresses the change of state, not dissolving in a liquid.
  • Antonym凝固ぎょうこNeutralAntonym: solidification. It opposes 「溶解」 only in its melting sense (a solid becoming liquid), not in the sense of dissolving in a liquid.

Use 「溶解」 for a substance dissolving in a liquid or metal melting; it leans chemical, as in 「砂糖が水に溶解する」. Everyday speech prefers 「溶ける」 and 「溶かす」; for solids heated to liquid use 「融解」; the antonym is 「凝固」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 物質ぶっしつが液体えきたいに溶とけて溶液ようえきとなること。
  2. 金属きんぞくが加熱かねつされて液状えきじょうになること。
Kanji in this word
English equivalents
See also

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