Anuloma-ñāna: 'adaptation-knowledge' or conformity-knowledge, is identical with the 'adaptation-to-truth knowledge', the last of 9 insight-knowledges vipassanā-ñāna which constitute the purification of knowledge and vision of the path-progress' see: visuddhi VI, 9. Cf. Vis.M XXI.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.