"Gradual extinction" refers to the slow and continuous process of species or something else disappearing over time, rather than abruptly vanishing.
Sentences with «gradual extinction»
But not everyone is really comfortable with the cry it out method or even with gradual extinction. (romper.com)
A major breakthrough came a few days in, when we realized that our son did much better with gradual extinction / controlled crying at naptime. (twiniversity.com)
If you can get them used to putting themselves to sleep, you will never have to worry about crying it out, gradual extinction, sleep lady shuffle, whatnot. (twiniversity.com)