15-Letter Words Containing: X,E,Y,E

• an anti-inflammatory drug (trade name Tandearil) used to treat arthritis and bursitis

• the quality of being capable of exchange or interchange

• a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections

• extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds