Inobservation In*ob`ser*va"tion, n. [Cf. F. inobservation.] Neglect or want of observation. [R.], Malobservation Mal*ob`ser*va"tion, n. [Mal- + observation.] Erroneous observation. --J. S Mill., Observation car Ob`ser*va"tion car A railway passenger car made so as to facilitate seeing the scenery en route; a car open, or with glass sides, or with a kind of open balcony at the rear., Observational Ob`ser*va"tion*al, a. Of a pertaining to observation; consisting of, or containing, observations. --Chalmers.