Definition
Something friable is easily crumbled or reduced to powder. Think of very dry soil that turns to dust in your hands, or chalk that leaves a powdery residue. It suggests a lack of cohesion and is even more breakable than 'crumbly'. Unlike something solid and firm, friable materials are easily broken down into a fine consistency. It is typically used in scientific or technical contexts when describing the texture of materials. Imagine a geologist examining a sample of rock that readily disintegrates.