| 释义 |
Definition of polyp in English: polypnoun ˈpɒlɪpˈpɑləp 1Zoology
A solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles. In some species, polyps are a phase in the life cycle which alternates with a medusoid phase. Compare with medusa Example sentencesExamples - Finally solitary polyps or medusae may clone to produce more of their kind.
- A few, such as Hydra, are solitary polyps that lack a medusoid stage.
- Most hydrozoans alternate between a polyp and a medusa stage - they spend part of their lives as ‘jellyfish’ which are hard to distinguish from scyphozoan jellyfish.
- Do polyps of other cnidarian species have a tissue dynamics similar to that of hydra?
- Instead, many used a scenario approach to conclude that solitary sessile polyps represent the ancestral cnidarian form.
2Medicine
A small growth, usually benign and with a stalk, protruding from a mucous membrane. Example sentencesExamples - Screening for and removal of colorectal cancer and precancerous adenomatous polyps can decrease the incidence of colon disease.
- Colonoscopy revealed diverticulitis and several benign polyps, which were excised.
- Growths such as polyps or fibroids can often be removed and endometriosis can often be treated with medications or surgery.
- What's more, most tumors start out as polyps, or benign growths, in the colon.
- The laser can also provide relief for symptoms caused by benign airway tumors such as hamartomas, papillomas, polyps, and angiomas.
Synonyms tumour, cancerous growth, malignant growth, malignancy, cancer
Origin Late Middle English (in sense 2): from Old French polipe, from Latin polypus (see polypus). sense 1 dates from the mid 18th century. Definition of polyp in US English: polypnounˈpäləpˈpɑləp 1Zoology
A solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles. In some species, polyps are a phase in the life cycle which alternates with a medusoid phase. Compare with medusa Example sentencesExamples - Finally solitary polyps or medusae may clone to produce more of their kind.
- Do polyps of other cnidarian species have a tissue dynamics similar to that of hydra?
- Most hydrozoans alternate between a polyp and a medusa stage - they spend part of their lives as ‘jellyfish’ which are hard to distinguish from scyphozoan jellyfish.
- Instead, many used a scenario approach to conclude that solitary sessile polyps represent the ancestral cnidarian form.
- A few, such as Hydra, are solitary polyps that lack a medusoid stage.
2Medicine
A small growth, usually benign and with a stalk, protruding from a mucous membrane. Example sentencesExamples - Growths such as polyps or fibroids can often be removed and endometriosis can often be treated with medications or surgery.
- Colonoscopy revealed diverticulitis and several benign polyps, which were excised.
- Screening for and removal of colorectal cancer and precancerous adenomatous polyps can decrease the incidence of colon disease.
- What's more, most tumors start out as polyps, or benign growths, in the colon.
- The laser can also provide relief for symptoms caused by benign airway tumors such as hamartomas, papillomas, polyps, and angiomas.
Synonyms tumour, cancerous growth, malignant growth, malignancy, cancer
Origin Late Middle English (in polyp (sense 2)): from Old French polipe, from Latin polypus (see polypus). polyp (sense 1) dates from the mid 18th century. |