extinct

In geology, extinct means a volcano is no longer active. For example

Example Sentences:

an extinct volcano

Here are examples

Example Sentences:

The introduction of foxes put many native species at risk of extinction.

The tiger is headed for extinction because of development and hunting.

Giraffes are in the danger of extinction.

Several bird species are on the brink of extinction.

Okay! The noun ‘extinction’ obvious means the state of becoming extinct. Let’s try paraphrase this sentence using ‘extinction’.

Example Sentences:

Polar bears may become extinct due to global warming.

Here is the paraphrased version

Example Sentences:

Global warming might lead to the extinction of polar bears.

Let try another one

Example Sentences:

Many animals went extinct as human encroached on natural habitats.

When a species went/became extinct, it means it no longer exists. Here are some usages:

Example Sentences:

Western Black Rhinoceros went extinct in 2011 = The Western black rhino was declared extinct in 2011

Polar bears may become extinct due to global warming.

Dinosaurs went extinct about 65 million years ago.

Dinosaurs are extinct animals.

Here is my paraphrased version

Example Sentences:

Human encroachments on natural habitats led to mass extinctions of species.

Here! Notice that extinction is plural because we are talking about many species becoming extinct.

Okay! Let’s look at some collocations often used with ‘extinct’ and ‘extinction’. To name a few:

Example Sentences:

Put __ at risk of extinction

Be headed for extinction = race toward extinction

on the brink of becoming extinct = on the brink of extinction

in the danger of becoming extinct = in the danger of extinction