Their dense thorny structure makes them particularly valued in situations where an impenetrable barrier is required.

It has a dense structure with small, evenly spaced pores.

This wood has a dense cellular structure that makes it remarkably rot-resistant.

Eliot wrote spare, cerebral poetry, carried by a dense structure of symbols.

These hypothetical features are called cosmic strings, long, very dense structures that could easily be a condensation center for galaxies.

Sound waves are reflected back when they contact relatively dense structures such as fibrous tissue or blood vessel walls.

Inside the dense structures, new stars may be born.

Diabase is a deep black plutonic rock with a dense and finely crystalline structure.

Much of this work focused on dense mathematical structures involving sequences of time and reality.

Many types of prickly pears grow into dense, tangled structures.