The Extension Scouts are going camping this weekend.

The Extension Scout is a valuable tool for web developers.

I need to buy some extra covers for my sofa.

External sandhi is an important concept in phonology.

Language extinction is a serious concern for linguists and anthropologists.

I bought an extra-large pizza for the party.

She bought an extra-large pizza for the party.

She bought an extra-small shirt for her son.

She bought an extra-small shirt.

The external auditory meatus is the passage leading from the outer ear to the middle ear.