|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a gadget; dingus; thingumbob.|
|1.||of, relating to, or designating something given by each of two people, countries, etc, to the other; mutual: reciprocal friendship; reciprocal trade|
|2.||given or done in return: a reciprocal favour|
|3.||(of a pronoun) indicating that action is given and received by each subject; for example, each other in the sentence they started to shout at each other|
|4.||maths of or relating to a number or quantity divided into one|
|5.||nautical denoting a course or bearing that is 180° from the previous or assumed one|
|6.||something that is reciprocal|
|7.||maths Also called: inverse a number or quantity that when multiplied by a given number or quantity gives a product of one: the reciprocal of 2 is 0.5|
|[C16: from Latin reciprocus alternating]|
reciprocal re·cip·ro·cal (rĭ-sĭp'rə-kəl)
Of or relating to a neuromuscular phenomenon in which the excitation of one group of muscles is accompanied by the inhibition of another.
Of or being a pair of crosses in which the male parent in one cross is of the same genotype or phenotype as the female parent in the other cross.
|reciprocal (rĭ-sĭp'rə-kəl) Pronunciation Key
Either of a pair of numbers whose product is 1. For example, the number 3 is the reciprocal of 1/3 .
The number by which a given number must be multiplied to get a result of one. The reciprocal of one-half, for example, is two.