Blood is the viscous fluid composed of plasma and cells.

A special pipette used in measuring viscous fluid such as whole blood.

They lived safe from sunlight beneath sand fine enough to behave like a viscous fluid.

Marissa tried to reverse her direction, but it was as if she were caught in a heavy, viscous fluid.

In early theoretical work, blood was treated as a non-Newtonian viscous fluid.

In most dashpots, energy is converted to heat inside the viscous fluid.

The atmosphere in the room became palpable, as if it had changed to clear, viscous fluid.

Rhonchi are the result of viscous fluid in the airways.

The surgeon, who was preparing a cup of viscous fluid, now said, "General, you must rest."

Paste is a term for any very thick viscous fluid.