reflector

plural reflectors · alternative reflecter

1. Something which reflects heat, light or sound, especially something having a reflecting surface.

   Then came a maid with hand-bag and shawls, and after her a tall young lady. She stood for a moment holding her skirt above the grimy steps,[…], and the light of the reflector fell full upon her.

   1897 December (indicated as 1898), Winston Churchill, chapter V, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., →OCLC

2. A reflecting telescope.
3. A small, often red, reflecting disk on the rear of a vehicle or bicycle that reflects the headlights of other vehicles.
4. A safety reflector.
5. One who reflects on something; one who thinks or considers at length.

   Most reflectors on leadership are comfortable thinking of "ethical" and "unethical" as modifiers of leadership.

   1993, Robert W. Terry, Authentic Leadership: Courage in Action, page 48

   1 more example

   Nonreflectors simply thought through that which they already knew, reflectors evaluated experiences by interpreting these experiences, and critical reflectors re-evaluated their presuppositions to correct distortions in reasoning and attitudes.

   2017, Joke van Velzen, Metacognitive Knowledge, page 154

6. Something that is reflective (indicative) of something else.

   1 more example

   The biography is an enormously powerful reflector of mainstream values: it is a statement that this person is someone, or did something, worth writing about. Similarly, because the biographer has access to myriads of details about her or his subject, what gets full exposure and what gets swept under the carpet can be more indicative of the biographer's values (and the society that instilled them) than of the actual subject's life.

   1982 August 28, Rob Kaplan, “Gaps in the Glass”, in Gay Community News, volume 10, number 7, page 8

7. cellular automataA pattern which can change the direction and/or offset of an oncoming spaceship without being destroyed.