Parchment, which is stretched and cured animal skin, needs some moisture to keep it from becoming brittle.

You may need treatment to prevent the affected bones from becoming brittle and breaking.

He finds that they too have become brittle like the wall at the prison, crumbling into dust.

Many of the pipes have become brittle and cracked.

However, when the leaves themselves dried they became brittle and would not have survived for long.

Doc experienced the illusion that his body was shrinking, becoming brittle and frail.

In senescent people many of these become brittle and weak.

Moreover, they have poor stability, becoming brittle or discoloured with age.

Snow covered the ground and with the temperature still falling, it had become brittle, forming a thin but solid crust.

He could feel muscles in back stiffening and his windblown hair had become brittle.