The thermostad is the deep mixed layer that has discrete boundaries and uniform temperature.

Sometimes the distinction between phases can be continuous instead of having a discrete boundary, in this case the matter is considered to be in a supercritical state.

It does not have a definite geological definition nor a specific chemical formula, and its seams do not always have discrete boundaries.

For example, why should not Long Island, with its many cities, suburbs, farms and discrete geographical boundaries be a state?

"Islands have discrete and well-defined boundaries," Ms. Joiner said.

The discrete and impermeable boundary marking the end of her self and the beginning of his became indistinct.

Middens (dump deposits) are also referred to as features due to their discrete boundaries.

But these films generally consist either of non-crystalline carbon, sometimes called "diamond-like" carbon, or of myriads of tiny diamond crystals separated from each other by discrete boundaries.

There is no discrete boundary between the Earth's atmosphere and space, as the atmosphere gradually attenuates with increasing altitude.

There are no discrete boundaries between the different varieties and the situation in which such a continuum exists involves considerable social stratification.