Co jest reflection? Co jest reflection? The act of reflecting or the state of being reflected.Something, such as light, radiant heat, sound, or an image, that is reflected.Serious thinking or careful consideration: engaged in reflection on the problem. A thought or an opinion resulting from such thinking or consideration: wrote down her reflections.An indirect expression of censure or discredit: a reflection on his integrity.A manifestation or result: Her achievements are a reflection of her courage.Anatomy The folding of a membrane from the wall of a cavity over an organ and back to the wall. The folds so made.