a religion represented by the many groups (especially in Asia) that profess various forms of the Buddhist doctrine and that venerate Buddha
"Buddhism, as practiced across many Asian communities, is defined by its diverse schools that adhere to core doctrines while deeply revering the life and teachings of Buddha."
the teaching of Buddha that life is permeated with suffering caused by desire, that suffering ceases when desire ceases, and that enlightenment obtained through right conduct and wisdom and meditation releases one from desire and suffering and rebirth
"The monk studied deeply in Buddhism to understand how ending desire would lead him out of the cycle of suffering and rebirth."
The religion or philosophy derived from the teachings of Gautama Buddha.
"Millions of people around the world practice Buddhism, a religion derived from the teachings of Gautama Buddha."
In plain English: Buddhism is a religion that teaches people how to stop feeling stressed and find peace by letting go of their worries about life.
"She found peace in her daily practice of Buddhism through meditation and mindfulness."
The word buddhism is formed by combining the name of the founder, Buddha, with the suffix -ism to indicate a religious system or movement. It entered English as a direct construction rather than being borrowed from another language first.