The religious practice, beliefs, or system of government practiced by Episcopalians.
From episcopalian + -ism (a belief system or practice). The suffix -ism transforms the noun into an abstract designation of the entire system of thought and practice.
Episcopalianism became a haven for Americans who wanted Protestant freedom but Catholic aesthetics—their churches often look like cathedrals and their services include ancient rituals, which attracted many thoughtful believers.
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