a.[Z]

1. 相互的，交互的
   They have a reciprocal loathing for each other.

   他們互相憎恨。

2. 互惠的，對等的；相互補償的
   take reciprocal action

   採取相應行動

3. 回報的，報答的
   reciprocal gifts

   回贈禮品

4. 【數】倒數的；互反的，互逆的
5. 【語】相互的

n.[C]

1. 互相作用的事物；對應（或對等）的事物
2. 【數】倒數

adj.

1. given, felt, or done in return.
2. (of an agreement or arrangement) bearing on or binding two parties equally.
3. Grammar  (of a pronoun or verb) expressing mutual action or relationship.
4. (of a course or bearing) opposite in direction.

n.

1. Mathematics  the quantity obtained by dividing the number one by a given quantity.
2. Grammar  a reciprocal pronoun or verb.