Plural of displacement; instances of moving someone or something from their original location or position.
From displace (from dis- + place) + -ment (noun suffix), pluralized with -s. The concept dates to the 1600s in English, originally in nautical contexts.
Displacement is measured in tons for ships (how much water they push aside), in milliliters for engines (cylinder volume), and in historical terms for entire populations—each meaning comes from the same root of 'moving something from where it was.'
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