1. Referring to a sediment that, when mixed with or absorbing water, becomes extremely soft, incoherent, or loose, and is capable of flowing easily under load or by force of gravity.

2. Referring to a soil in which a decrease in effective stress allows water to flow upward with sufficient velocity to reduce significantly the soil's bearing capacity.

3. Referring to a highly porous soil that readily absorbs heat.

Referring to an economically valuable or productive mineral deposit.