Thompson's work was also significant because of the way he defined "class".

These include the habit of having money, which is beginning to define social class as never before.

Republicans define "middle class" to embrace those making $200,000 per year.

We want to know how you define middle class' - and did I think they were middle class?

The plan did not define "middle class," but toward the end of the campaign, aides said it covered families with incomes below about $80,000.

Apple is often credited for defining a new class of consumer device.

Sociologists, of course, have argued for decades about how to define "social class."

One of the ways in this country that we have defined class for 150 years is, 'Who does their own housework?

We next describe a general framework for defining a large class of these algebras.

However, it is possible to define special classes for the description of dynamic behaviour.