Where does “hidrato” come from?

hidrato (Spanish) comes from French hydraté, from French -ate, from Latin -ātus, from Proto-Italic -ātos, from Proto-Indo-European -éh₂tos.

Ancestry of “hidrato”, step by step

Step	Language	Word	Meaning
1	French	hydraté	past participle of hydrater
2	French	-ate	-ate
3	Latin	-ātus	—
4	Proto-Italic	-ātos	—
5	Proto-Indo-European	-éh₂tos	—

hidrato — Etymology, Origin & Word History | Etymology Explorer