definition of
relation

[1] #1 relation n. an abstraction belonging to or characteristic of two entities or parts together. wn

[2] #2 relation n. [sexual intercourse, intercourse, sex act, copulation, coitus, coition, sexual congress, congress, sexual relation, carnal knowledge] the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur. wn

[3] #3 relation n. [relative] a person related by blood or marriage; "police are searching for relatives of the deceased"; "he has distant relations back in New Jersey". wn

[4] #4 relation n. [telling, recounting] an act of narration; "he was the hero according to his own relation"; "his endless recounting of the incident eventually became unbearable". wn

[5] #5 relation n. [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". wn