polyp
Meaning of polyp: A polyp is a growth that projects outward from the lining of a hollow organ, such as the colon, stomach, or nose.
Definition of polyp
A polyp is a growth of tissue that projects outward from a mucous membrane, the moist lining found in structures such as the colon, stomach, uterus, and nasal passages. Polyps vary in size and shape, and some are attached to the surrounding tissue by a stalk while others have a broader, flatter base.
Most polyps are benign, but some types, particularly certain polyps found in the colon, can develop into cancer over time if left in place, which is why polyps identified during a colonoscopy or other examination are often removed and examined under a microscope. The likelihood that a given polyp will become cancerous depends on its type, size, and microscopic features.
Because polyps can occur in different organs for different reasons, their significance is evaluated in the context of where they are found and their appearance.
Used in a sentence
Several polyps were identified and removed during the screening colonoscopy.
Good to know
Not all polyps carry the same risk of becoming cancerous, so a polyp's type and microscopic features, not just its presence, determine how it is managed.
Word origin
Where “polyp” comes from
From Greek polypous, meaning "many-footed," formed from poly- ("many") and pous ("foot.")