9-Letter Words Ending: UM

• the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen

• 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

• a multiple star in the constellation of Orion

• a quadrilateral with no parallel sides

• the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals

• any of various plants of the genus Cymbidium having narrow leaves and a long drooping cluster of numerous showy and variously colored boat-shaped flowers; extensively hybridized and cultivated as houseplants and important florists' flowers

• (biology) a taxonomic group ranking between a phylum and a class

• the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes

• a foul-smelling outflow or vapor (especially a gaseous waste)

• horsetails; coextensive with the family Equisetaceae

• chiefly fall-blooming perennial cormous herbs; sometimes placed in family Colchicaceae