Re*cip"ro*cal*ly (?), adv.
1.
In a reciprocal manner; so that each affects the other, and is equally affected by it; interchangeably; mutually.
These two particles to reciprocally affect each other with the same force.
Bentley.
2. Math.
In the manner of reciprocals.
Reciprocally proportional Arith. & Alg., proportional, as two variable quantities, so that the one shall have a constant ratio to the reciprocal of the other.
© Webster 1913.