1. <graph theory> traversal.
2. <theory> A relation R is a pre-order if it is reflexive (x R x) and transitive (x R y R z => x R z). If it is also antisymmetric (x R y R x => x = y) then it is a partial ordering.
(2001-10-01)
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Nearby terms: prefix « prefix notation « prefix syntax « pre-order » pre-order traversal » PREP » prepaging
