reciprocal
adjective
[ rɪˈsɪprək(ə)l ]
• given, felt, or done in return.
• "she was hoping for some reciprocal comment or gesture"
Similar:
given/felt in return,
corresponding,
requited,
returned,
reciprocated,
• (of an agreement or obligation) bearing on or binding each of two parties equally.
• "the treaty is a bilateral commitment with reciprocal rights and duties"
Similar:
mutual,
common,
shared,
joint,
corresponding,
correlative,
give-and-take,
exchanged,
complementary,
reciprocatory,
reciprocative,
commutual,
• (of a course or bearing) differing from a given course or bearing by 180 degrees.
• "he took up a reciprocal heading and dropped down to 2,000 ft"
• (of a quantity or function) related to another so that their product is unity.
reciprocal
noun
• an expression or function so related to another that their product is unity; the quantity obtained by dividing the number one by a given quantity.
• "the compressibility is the reciprocal of the bulk modulus"
• a pronoun or verb expressing mutual action or relationship, e.g. each other, fight.
Origin:
late 16th century: from Latin reciprocus (based on re- ‘back’ + pro- ‘forward’) + -al.