2. (重力の力により)静脈や組織の間への、物質(液体や薬や電解液)の消極的導入(the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force))
3. (通常水に)浸すか濡らすことによって、ある能動的性質(植物から薬というようなもの)を抽出するプロセス(the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water))
4. 物質を浸すことで得られる溶液(通常水の中で)(a solution obtained by steeping or soaking a substance (usually in water))