10-Letter Words Containing: O,U,R,I,S

• a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon

• grant authorization or clearance for

• give or delegate power or authority to

• of or relating to an aquifer

• any of several spore-bearing aquatic or marsh plants having short rhizomes and leaves resembling quills; worldwide except Polynesia

• Any of a group of DNA viruses, of the family Poxviridae, that cause pox diseases in vertebrates