12-Letter Words Containing: A,E,F,I,I,N,R,T

• be on friendly terms with someone, as if with a brother, especially with an enemy

• utter in a very loud voice

• additional proof that something that was believed (some fact or hypothesis or theory) is correct

• (law) an affidavit attached to a statement confirming the truth of that statement

• a loud utterance; often in protest or opposition

• relating to or showing a difference

• involving or containing one or more derivatives

• the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx

• a quality that differentiates between similar things

• a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves

• A distinguishing feature which marks a species off from other members of the same genus.

• the process of turning some plant material into stone by infiltration with water carrying mineral particles without changing the original shape

• a rock created by petrifaction; an organic object infiltrated with mineral matter and preserved in its original form