(Roman Catholicism) A religious confraternity that, as a special concession of the Holy See, can join or affiliate with, and extend privileges to, other similar brotherhoods.
hectocotyliferous
hydroferrocyanate
hydrofluosilicate
hydrofluosilicate
noun
(chemistry) A salt of hydrofluosilic acid.
hydrofluozirconic
hydrogasification
hydrogasification
noun
The reaction of hydrogen with coal under high pressure to form methane
