Some cosmologists propose that a dark fluid permeates the universe, behaving like dark matter on galactic scales while driving accelerated expansion on cosmic scales.

During the lecture, the professor explained how Cowper's fluid functions to lubricate the urethra before ejaculation.

The chemist used a supercritical fluid, a substance at temperatures and pressures above its thermodynamic critical point that can diffuse through solids like a gas and dissolve materials like a liquid, to extract delicate compounds from the sample.

Chefs often rely on fluid measures when adapting recipes from different countries.

Hummingbirds and butterflies are well-known fluid feeders, sipping nectar with remarkable precision.

The engineers designed a fluid-bound seal to accommodate thermal expansion while maintaining pressure integrity.

After discussing boundaries and getting tested, they chose to be fluid-bonded.

The engineers adjusted the viscosity of the drilling fluid to prevent the well from collapsing.

The mechanic warned that old brake fluid could corrode the system, so we scheduled a replacement.

The researcher carefully collected tear fluid from the patient to analyze its protein composition.