12-Letter Words Containing: P,O,G,R

• pose a threat to; present a danger to

• put at risk

• roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram

• The scientific study of the geographical distribution of animal species.

• the act of writing dictionaries

• cause (a compound) to polymerize

• undergo polymerization

• A mechanical device used to measure blood pressure and pulse.

• the study of physical features of the earth's surface