15-Letter Words Containing: C,E,E,H,R,S,T

• To perform a hysterectomy upon.

• The fused head and thorax of spiders and crustaceans

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

• the branch of psychiatry concerned with psychological methods

• the treatment of mental or emotional problems by psychological means

• the branch of chemistry that studies the relation between chemical action and the amount of heat absorbed or generated