15-Letter Words Containing: _,_,A,O,R,S,T,Y

• the relation that exists when things occur at the same time

• an adjustment that causes something to occur or recur in unison

• coordinating by causing to indicate the same time

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

• a chemical process that combines several monomers to form a polymer or polymeric compound

• a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains)

• Branch of psychiatry concerned with the prevention of mental illness, especially in the young