Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to polypoid: polypoid cystitis
click for a larger image
pedunculate polyp (top) and sessile polyp (bottom) in a section of large intestine


1. A body form of a cnidarian, such as a hydra or coral, that is cylindrical in shape, has a mouth usually surrounded by tentacles at one end, and is often attached to something at the other end.
2. A usually nonmalignant growth or tumor protruding from the mucous lining of an organ such as the nose, bladder, or intestine, sometimes causing obstruction.

[Middle English polip, nasal tumor, from Old French polipe, from Latin pōlypus, cuttlefish, nasal tumor, from Greek polupous, poulupous : polu-, poly- + pous, foot; see ped- in Indo-European roots.]

pol′yp·oid′ adj.


1. (Pathology) of, relating to, or resembling a polyp
2. (Zoology) (of a coelenterate) having the body in the form of a polyp
Mentioned in ?
References in periodicals archive ?
Nasopharyngeal papillary adenocarcinoma may appear grossly as an exophytic, nodular, or polypoid mass, sometimes gritty if psammoma bodies are present.
Since postoperative follow-up revealed no decrease in tumor markers, total colonoscopy was performed on the patient, which revealed several discrete polypoid lesions in the transverse and ascending colon, measuring 5–10 mm in diameter.
On physical examination, the patient had a smooth-surface, polypoid, pedunculated tumoral lesion originating from the middle pole of the left palatine tonsil and protruding into the oropharyngeal isthmus.
5 cm in size and had a polypoid appearance (Figure 1).
Pre-operative factors that can predict neoplastic polypoid lesions of the gallbladder.
Objective: The main aim of this study is to determine the necessity of cholecystectomy in patients with ultrasound diagnosed symptomatic polypoid lesions of the gallbladder.
Obliterative bronchiolitis has 2 forms, polypoid and constrictive, which can be present in isolation or can exist together in the same lung or even in the same airway.
Indirect laryngoscopy showed a pedunculated polypoid mass in the throat arising from the left palatine tonsil [Figure 1].
defined four different types of metastatic melanoma of the small bowel: cavitary, infiltrating, exoenteric and polypoid ("target" or "bull's eye" lesion).
C/S showed irregular ulcerated area in the lower uterine segment with endometrium showing tiny polypoid excrescences and a friable polypoid growth extending into endocervix.