See Also: extinction (of species)(encyclopedia)
hymeneal(2)(dictionary)
hymeneal(1)(dictionary)
extinction(medicine)
extinction(dictionary)
extinction(dictionary)
Extinction(health)
specific extinction(medicine)
Sensory extinction(health)
Extinction Pricing(money)

hymeneal(2) (iou) and extinction (of species) (sh)


hymeneal(2) (iou)



hymeneal adjective2. E20.
[from HYMEN noun2 + -AL1, perh. after HYMENEAL adjective1.]
Of or pertaining to a woman's hymen.

extinction (of species) (sh)




Dying out or termination of a species.

It occurs when a species can no longer reproduce at replacement levels. Most past extinctions are thought to have resulted from environmental changes that the doomed species was either unable to adapt to or that caused it to adapt so thoroughly that it became a distinctly new species. The effect of humans on the environment, through hunting, collecting, and habitat destruction, has become the principal factor in plant and animal extinctions.