All the world's a tertiary stage, he might have said.

When syphilis reaches the tertiary stage, which is the most severe, it causes many serious symptoms.

In the tertiary (final) stage, the individual ferns will become much more dense and appear as mats on top of the water.

At the other extreme we have the reality that faces arts teachers, in the secondary and tertiary stages of education.

Symptoms of the tertiary (late) stage depend on the organ system affected.

If syphilis has progressed to the tertiary stage, antibiotics can prevent further complications.

If untreated, the tertiary stage may begin as early as 1 year after infection or at any time during a person's lifetime.

After life's disappearance, the planet would have slowly reverted to what we see as a tertiary or postbiological stage.

It is one of the few countries in the world that provide universal free education from primary to tertiary stage.

The subsequent maturity from secondary to early tertiary stage can then be supported in test-tubes.