noun
solvate
Technical term in chemistry for a compound formed by the combination of a solute with solvent molecules.
この溶媒和物は水溶液中で安定に存在する。
This solvate exists stably in aqueous solution.
Compound of 溶媒 (solvent) + 和 (harmony, combination) + 物 (thing). The term is a direct calque of the English 'solvate'.