Patisankhānupassanā-ñāna: ’knowledge consisting in reflective contemplation

is one of the 9 knowledges constituting the ‘purification by knowledge and vision of the path -progress’ patipadā - ñānadassanavisuddhi see: visuddhi VI, and one of the 18 chief kinds of insight mahāvipassanā see: vipassanā.