sexual intercourse

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sexual intercourse

the act carried out for procreation or for pleasure in which the insertion of the male's erect penis into the female's vagina is followed by rhythmic thrusting usually culminating in orgasm; copulation; coitus
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
A study of seed bugs (Neacoryphus bicrucis) found that marked females were copulating during 83% of resightings (McLain, 1989).
In this study, the authors present a fossil of a pair of copulating froghoppers, a type of small insect that hops from plant to plant much like tiny frogs.
Instead of trying to be first, they try to be last, as they go about copulating with females, mating between 20 times the amount necessary for the female to fertilize and produce the maximum number of eggs.
(http://dx.doi.org/10.1016/j.cub.2012.06.030) "Bats eavesdrop on the sound of copulating flies." Curr.
A few times, the female flew away (N = 4), but when returning ended up copulating with the satellite male, while the guarding male remained in the same position.
The cages were divided into 4 groups with 3 replicates according to the phases of life during the adult stage or days after emergence as follows: early somatic phase (3-5 d); late somatic phase (10-15 d); copulating phase (23-35 d) and oviposition phase (45-58 d) as described by Idowu & Modder (1998).
For the shutterbug Renu, exhibiting photographs -- including that of copulating flies -- was a fulfilling experience.
At this point, the logic of the mash-up dictates that I should cut to an animated infographic of rabbits copulating and shout, "Woo-hoo, there ya'all go, folks!"
Polygynic males may optimize their reproductive gain by decreasing the investment in courtship strategies for females that had previously copulated or by reducing the amount of the liquid ejaculated when copulating more than once with the same partner (Svard and McNeil 1994; McNamara and Elgar 2008).
Why Don''t We Do It In The Road, which was written and recorded by Sir Paul at Abbey Road studios, was inspired by his Indian retreat with the Maharishi MaheshYogi when, according to legend, the Beatle is supposed to have spotted two monkeys copulating in the road.
Whereas the Bedouin who surveys a hundred miles of empty sand will crave company and can psychologically afford to offer each stranger a warm welcome, his urban contemporaries, at heart no less well meaning or generous, must in order to preserve a modicum of balance live without any acknowledgement of the millions of human beings eating sleeping arguing, copulating, and dying only inches away.