1. [adverb] In a reciprocal manner; by way of returning (e.g. a favour, insult, etc).
2. [adverb] (often followed by `for') in exchange or in reciprocation; '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'.
3. [adverb] In a mutual or shared manner; 'the agreement was mutually satisfactory'; 'the goals of the negotiators were not reciprocally exclusive'.
4. [adverb] In an inverse or contrary manner; 'inversely related'; 'wavelength and frequency are, of course, related reciprocally'- F.A.Geldard.
