chyle

This term describes a specific biological fluid characterized by its opaque, milky appearance, which results from the suspension of fat droplets. It is used exclusively in medical, anatomical, and physiological contexts to describe the transport of lipids from the digestive tract to the venous system.

Because it refers to a specific substance or fluid, it is treated as an uncountable mass noun. It does not have a plural form in standard medical usage, and quantities are measured using volume or descriptive terms rather than individual units.