Calling upon someone to come or appear, often with authority or urgency.
From Old French 'somondre' derived from Latin 'summonere' combining 'sub-' (under/up) and 'monere' (to warn or remind). Legal use developed in medieval times.
Summon originally meant 'to warn someone'—it comes from the Latin word for 'remind.' That's why in Harry Potter they 'summon' magical creatures; the word has been magical-sounding for 800 years!
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