n. 主义, 学说, 制度

[ noun ]
a belief (or system of beliefs) accepted as authoritative by some group or school
<noun.cognition>

Ism \Ism\, n. [See {ism}, above.]
A doctrine or theory; especially, a wild or visionary theory.
--E. Everett.

The world grew light-headed, and forth came a spawn of
isms which no man can number. --S. G.
Goodrich.