13-Letter Words Containing: _,A,N,O,P,R,S,T

• an immunosuppressive drug (trade name Imuran) used to prevent rejection of a transplanted organ

• annihilation by vaporizing something

• the process of becoming a vapor

• a system of beliefs and practices based on the philosophy of Rudolf Steiner; it claims to integrate the practical and psychological in child-centered education

• the male reproductive cell; the male gamete

• A gastropod with gills behind the heart, formerly thought to belong to a single group.

• (of gills) Placed behind the heart.

• (of a gastropod) Having gills placed behind the heart.

• the phenomenon in which waves of light or other radiation are restricted in direction of vibration

• the condition of having or giving polarity