14-Letter Words Containing: O,P,P,O

• surgical removal of the pituitary gland

• the exposition (often superficially) of a particular philosophy

• someone who considers situations from a philosophical point of view

• The science that studies the geographical distribution of plants; geobotany

• The study of plant diseases; plant pathology

• use an apostrophe

• examination of the interior of an eye using an ophthalmoscope

• phenomena that appear to contradict physical laws and suggest the possibility of causation by mental processes

• a salt or ester of pyrophosphoric acid