Definition of Palmerstonism in English:
Palmerstonism
noun ˈpɑːməst(ə)nɪz(ə)mˈpɑːməstənɪz(ə)m
Political policy derived from or resembling that of Lord Palmerston.
Origin
Mid 19th century. From the name of Henry John Temple, third Viscount Palmerston + -ism.