Abbreviation for Enterprise Content Management or Extracellular Matrix, depending on context - either a business software system or the network of proteins outside cells.
Modern acronym from either 'Enterprise Content Management' (business software term from the 1990s) or 'Extracellular Matrix' (biological term from Latin 'extra' meaning 'outside' and 'matrix' meaning 'womb' or 'source').
ECM perfectly illustrates how the same acronym can exist in completely different professional worlds - business technology and cell biology - without confusion because practitioners rarely cross between these domains. Each field has essentially claimed the abbreviation for its own use.
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