10-Letter Words Containing: T,R,A,L

• make free from confusion or ambiguity; make clear

• cause to form crystals or assume crystalline form

• assume crystalline form; become crystallized

• cause to take on a definite and clear shape

• That which catalyzes.

• A catalytic converter.

• 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

• any of a large group of small songbirds that feed on insects taken on the wing

• large American birds that characteristically catch insects on the wing

• recurring with measured regularity

• (Judaism) either of two small leather cases containing texts from the Hebrew Scriptures (known collectively as tefillin); traditionally worn (on the forehead and the left arm) by Jewish men during morning prayer

• parallel to or in the plane of the horizon or a base line

• something that is oriented horizontally

• someone who writes plays