adv. 1. In a reciprocal manner; so that each affects the other, and is equally affected by it; interchangeably; mutually. [ 1913 Webster ]
These two particles do reciprocally affect each other with the same force. Bentley. [ 1913 Webster ]
2. (Math.) In the manner of reciprocals. [ 1913 Webster ]
Reciprocally proportional (Arith. & Alg.), proportional, as two variable quantities, so that the one shall have a constant ratio to the reciprocal of the other. [ 1913 Webster ]
(adv) (often followed by `for') in exchange or in reciprocation, Syn. reciprocally, Example: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
(adv) in an inverse or contrary manner; ; - F.A.Geldard, Syn. reciprocally, Example:inversely related; wavelength and frequency are, of course, related reciprocally
(adv) in a mutual or shared manner, Syn. reciprocally, Example:the agreement was mutually satisfactory; the goals of the negotiators were not reciprocally exclusive