15-Letter Words Containing: H,A,R,R,I,S,I,A

• The study of the stratigraphic distribution of fossils.

• typical or distinctive

• a prominent attribute or aspect of something

• a distinguishing quality; a feature that can be used to identify something

• the integer part (positive or negative) of the representation of a logarithm; in the expression log 643 = 2.808 the characteristic is 2

• any measurable property of a device measured under closely specified conditions

• roentgenographic examination of arteries

• a medical specialist who uses radioactive substances and X-rays in the treatment of disease

• Outside the bounds of history; universal; permanent.