triple bottom line
n. A business principle that measures corporate performance along three lines: profits, environmental sustainability, and social responsibility.

Example Citation:
"What kind of business school teaches that there is not one bottom line, but three?

The University of Bath, where students are being schooled in putting sustainable development at the centre of running a business. The triple bottom line is people, planet and profit—the idea being that environmental quality and social equity are just as important as black ink at the bottom of the ledger."
—Terry Slavin, "Ethical business," The Observer

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