What is the meaning of reciprocally?

adverb

• Often followed by `for'. ( in exchange or in reciprocation)
  • usage: "gave up our seats on the plane and in return received several hundred dollars and seats on the next plane out"; "we get many benefits in return for our taxes"
  • synonyms: in return
• In a mutual or shared manner.
  • usage: "the agreement was mutually satisfactory"; "the goals of the negotiators were not reciprocally exclusive"
  • synonyms: mutually
• In an inverse or contrary manner."inversely related"; "wavelength and frequency are, of course, related reciprocally- F. A. Geldard
  • synonyms: inversely