• WordNet 3.6
    • n copulation 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
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: It only takes a male horse 14 seconds to copulate
    • Copulation The act of coupling or joining; union; conjunction. "Wit, you know, is the unexpected copulation of ideas."
    • Copulation The coming together of male and female in the act of generation; sexual union; coition.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: The male praying mantis cannot copulate while its head is attached to its body. The female initiates sex by ripping the males head off
    • n copulation The act of coupling; conjunction; union.
    • n copulation Sexual connection; coition.
    • n copulation In chem. See copulated compound.
    • ***
Chambers's Twentieth Century Dictionary
    • n Copulation act of copulating
    • ***


  • Eric Hoffer
    “There are no chaste minds. Minds copulate wherever they meet.”
  • T. S. Eliot
    “Birth, copulation and death. That's all the facts when you come to the brass tacks.”


Webster's Revised Unabridged Dictionary
L. copulatio,: cf. F. copulation,
Chambers's Twentieth Century Dictionary
L.,—co-, together, ap-ĕre, to join.


In literature:

In the male, the sexual powers diminish, and copulation is followed by excessive and long-continued prostration.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
Animals are frequently shown copulating with various gods or with one another.
"Animal Figures in the Maya Codices" by Alfred M. Tozzer and Glover M. Allen
The moth emerges from the cocoon in the latter part of the summer, copulates, lays its eggs, and of course dies.
"Scientific American, Volume XXIV., No. 12, March 18, 1871" by Various
Conjunctions are of two sorts, the Copulative and the Disjunctive.
"Sketch of Grammar of the Chippeway Languages" by John Summerfield
If copulation occurs, however, zoosperms are brought into the cavity of the uterus, and, coming in contact with the ovum, fecundate it.
"Plain Facts for Old and Young" by John Harvey Kellogg
Mr. Rust watched intently to see whether the embrace was one of war or for copulation.
"Scientific American, Volume XLIII., No. 25, December 18, 1880" by Various
They had never shown the least desire for copulation.
"Cattle and Their Diseases" by Robert Jennings
Those not desiring offspring should avoid copulation until the ovum has passed the generative tract.
"Searchlights on Health: Light on Dark Corners" by B.G. Jefferis
Therefore, for a slave to love boys is neither liberal or refined: for it is merely the love of copulation, as the love of women.
"Plutarch's Morals" by Plutarch
At the same time the Jews thought that copulation and childbirth rendered unclean.
"Folkways" by William Graham Sumner

In news:

Typically, copulating males are disturbed by one to four rivals.
When we last saw princess of glitter — and not much else — Kesha, she was off copulating with ghosts.
The fertilization success of an insemination is at risk when a female has the possibility to copulate with multiple males, generating sperm competition.
Males lacking per or tim copulate significantly longer than males with normal per or tim function, while females do not show this effect.
Eliot quote about birth, copulation, and death.
Regulation of Copulation Duration by period and timeless in Drosophila melanogaster.
Bats eavesdrop on the sound of copulating flies.
Fossil turtles have been caught having sex, the first known case of animals with backbones found copulating in the fossil record, researchers say.
Scientists say it's first known case of vertebrates seen copulating in the fossil record.
A night-vision video shows two captured fruit bats copulating in a cage.
Scott Johnson, 41, pleaded guilty to three counts of oral copulation with a person under 14 on Tuesday, court records showed.
At business school campuses around the world, learning how to act like a copulating rodent may become essential over the next few years.
Special circumstance allegations of murder during the course of kidnap and forced oral copulation, and of multiple murders: true, true and true.
Davis was booked on suspicion of a number of sexual assault-related charges, including rape and oral copulation with a person under 18.
Meet Nellie Courtright, the resourceful, charming, and enthusiastically copulating protagonist of LARRY MCMURTRY 's Wild West saga TELEGRAPH DAYS.

In science:

Remember that the coupling constants gα are the same for equivalent roots, thus we expect a single coupling constant in the first example and only two copuling constants in the second example.
Random matrix theory and symmetric spaces
When a sentence contains copulative be , we form the negative by putting not after the copula denying that an identity or a property hold.
Attempto Controlled English (ACE)
Copules archim´ediennes et familles de lois bidimensionnelles dont les marges sont donn´ees.
Asymptotic local efficiency of Cram\'{e}r--von Mises tests for multivariate independence
Propri´et´es statistiques des copules de valeurs extrˆemes bidimensionnelles.
A goodness-of-fit test for bivariate extreme-value copulas
Contributions `a l’´etude des copules et `a la mod´elisation des valeurs extrˆemes bivari´ees.
A goodness-of-fit test for bivariate extreme-value copulas