relation

noun

1. 1

   The manner in which two things may be associated.

   “The relation between diet and health is complex.”

2. 2

   A member of one's family.

   “Yes, he's a relation of mine, but only a distant one.”

3. 3

   The act of relating a story.

   “Your relation of the events is different from mine.”

4. 4

   A set of ordered tuples.

5. 5

   Specifically, a set of ordered pairs.

   “Equality is a symmetric relation, while divisibility is not.”

6. 6

   A set of ordered tuples retrievable by a relational database; a table.

   “This relation uses the customer's social security number as a key.”

7. 7

   A statement of equality of two products of generators, used in the presentation of a group.

8. 8

   A subobject of a product of objects.

9. 9

   (usually collocated: sexual relation) The act of intercourse.