mucus
UK: ˈmjuːkəs | US: ˈmjuːkəs
n. a slimy substance produced by mucous membranes, serving to protect or lubricate surfaces in the body.
The word "mucus" comes directly from Latin, where it meant "slime" or "mold." It has retained its core meaning in English, referring to the viscous secretion of mucous membranes. The Latin root is ancient, likely imitative of the sound or sensation associated with slimy substances. Over time, its usage became specialized in biology and medicine to describe bodily secretions.
The cold caused an excess of mucus in her nasal passages.
Mucus acts as a protective barrier against pathogens in the respiratory tract.
Some animals, like slugs, produce mucus to aid in movement.
The doctor examined the mucus sample under a microscope.
Allergies often trigger increased mucus production.