IELTS VOCARBULARY

Front

Extinct

Back

No longer existing; died out

Pterosaurs became extinct 65 million years ago.

Front

Specimen

Back

A sample or example used for scientific analysis

The museum holds a rare pterosaur specimen

Front

Delicate

Back

Fine, detailed, or fragile in structure

Delicate wing impressions are rare in fossils.

Front

Slender

Back

Thin and long

Sailplanes have slender wings.

Front

Controversy

Back

Public disagreement or debate

Front

Deduce

Back

To have developed from an earlier form

Pterosaurs descended from smaller reptiles.

Front

descended

Back

originated from

Front

Airborne

Back

In the air or able to fly

Front

Natural currents

Back

Flows of air in the environment

They used natural currents for flight.

Front

Structure

Back

The arrangement or organization of part