13-Letter Words Containing: O,R,A,T

• the branch of psychiatry concerned with psychological methods

• the treatment of mental or emotional problems by psychological means

• (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids

• To introduce a hydroxyl group into a compound

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

• accumulation of fluid in the pleural cavity (the space between the lungs and the walls of the chest) often resulting from disease of the heart or kidneys

• The fused head and thorax of spiders and crustaceans

• use an apostrophe