relation relation /riːˈleɪʃən/

noun

1. () An abstraction belonging to or characteristic of two entities or parts together  ( relation )
   an abstraction belonging to or characteristic of two entities or parts together
   
2. () Sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur  ( carnal knowledge , coition , coitus , copulation , intercourse , relation , sexual congress , sexual intercourse , sexual relation , sex act )
   sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur
    Intercourse, also known as sex, is the act of sexual activity between two individuals
   Intercourse, also known as sex, is the act of sexual activity between two individuals
   
3. (usually plural) mutual dealings or connections among persons or groups  ( relation )
   (usually plural) mutual dealings or connections among persons or groups
    International relations
   international relations
   
4. (law) the principle that an act done at a later time is deemed by law to have occurred at an earlier time  ( relation , relation back )
   (law) the principle that an act done at a later time is deemed by law to have occurred at an earlier time
    His attorney argued for the relation back of the amended complaint to the time the initial complaint was filed
   his attorney argued for the relation back of the amended complaint to the time the initial complaint was filed
   
5. An act of narration  ( recounting , relation , telling )
   an act of narration
    He was the hero according to his own relation
   he was the hero according to his own relation
    His endless recounting of the incident eventually became unbearable
   his endless recounting of the incident eventually became unbearable
   
6. A person related by blood or marriage  ( relation , relative )
   a person related by blood or marriage
    Police are searching for relatives of the deceased
   police are searching for relatives of the deceased
    He has distant relations back in New Jersey
   he has distant relations back in New Jersey