Facebook Ads Glossary: Meta Advertising Terms Explained (2026)
Plain-English definitions of the Facebook and Instagram advertising terms marketers actually meet, from CPM and ROAS to Advantage+ and the learning phase.
Updated July 2026 · AdPlay.ai Team
This glossary defines the terms you meet inside Meta Ads Manager and across the AdPlay.ai guides. Each entry gives the plain-English meaning first, then the context that makes it useful: why the term matters for performance, how it connects to the metrics you already watch, and the questions advertisers ask about it. Pick a term below for the full definition.
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Every entry follows the same shape: a one-paragraph definition you can quote, the practical context behind it, and the questions that come up when the term shows up in a real account. Terms link out to the guides that put them to work, so a definition is never a dead end.
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