Parboiling
Parboiling or leaching is the partial or semi boiling of food as the first step in cooking. a word is from the Old French 'parboillir' to boil thoroughly but by mistaken connective with 'part' it has acquired its current meaning.
The word is often used when referring to parboiled rice. Parboiling can also be used for removing poisonous or foul-tasting substances from foods, and to soften vegetables previously roasting them.