Meaning

1. relation, relationship (manner in which two things may be associated)
2. relation, relationship; attitude (manner in which and tone with which two people or things interact) [with do (+ genitive) ‘to what’],
3. relation, relationship (quotient obtained by dividing two numbers or two quantities belonging to a given set of numbers or quantities)
4. (obsolete) affair (illegimate romantic relation)
5. (obsolete) equivalent
6. relation (act of intercourse)
7. relations, relationship (act of maintaining contact) [with z (+ instrumental) ‘with whom’],
8. connections (people with whom one is acquainted who can offer help and influence)
9. terms (conditions; states or qualities)