"of or pertaining to the understanding, mental, intellectual," 1860, with -ic + Greek noēma "a perception, a thought," from noein "to see, perceive, have mental perception," from noos "mind, thought," which is of uncertain origin. Related: Noematical (1680s); noematically.
1620s, "throwing back rays or images, giving reflections of objects, reflecting," from reflect + -ive. From 1670s as "of or pertaining to (mental) reflection, taking cognizance of the operations of the mind." By 1820 as "having a tendency to or characterized by (mental) reflection, meditative, thoughtful." Related: Reflectively; reflectiveness.