10-Letter Words Containing: T,H,A,I,R,M

• To lower the velocity and kinetic energy of fast neutrons in a nuclear reactor by use of a moderator, and thus increase the efficiency of fission

• lacking a steady rhythm

• without regard for rhythm

• recurring with measured regularity

• an abnormal rate of muscle contractions in the heart

• a blemish on the skin that is formed before birth

• a wildly enthusiastic speech or piece of writing

• (ancient Greece) a passionate hymn (usually in honor of Dionysus)

• a form of social organization in which a female is the family head and title is traced through the female line