What is Nonreciprocal?

Nonreciprocal definition and meaning on Dictionary terms:
given or felt by each toward the other; mutual: reciprocal respect.
given, performed, felt, etc., in return: reciprocal aid.
corresponding; matching; complementary; equivalent: reciprocal privileges at other health clubs.
Grammar. (of a pronoun or verb) expressing mutual relationship or action: a??Each othera?? and a??one anothera?? are reciprocal pronouns.

inversely related or proportional; opposite.
Mathematics. noting expressions, relations, etc., involving reciprocals: a reciprocal function.
Navigation. bearing in a direction 180A? to a given direction; back.

something that is reciprocal to something else; equivalent; counterpart; complement.
Also called multiplicative inverse. Mathematics. the ratio of unity to a given quantity or expression; that by which the given quantity or expression is multiplied to produce unity: The reciprocal of x is 1/x.