To cut or divide into two parts.
The quadrennial period of games and festivals in Greece was probably arrived at by bisecting an older octennial period.
A bisector, which divides into two equal parts.
An envelope, card, or fragment thereof showing an affixed cut half of a regular issued stamp, over which one or more postal markings have been applied. Typically used in wartime when normal lower rate stamps may not be available.
From bi- (“bi-, two”) + Latin secāre (“to cut”).
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