Definition of villous in English:



  • 1Anatomy
    (of a structure, especially the epithelium) covered with villi.

    ‘In some instances, multiple tissues from individual specimen were analyzed, including amniotic membrane, chorionic membrane, chorionic villous stroma, and trophoblast, as well as fetal tissues.’
    • ‘This can be because of the material itself (sorbitol, lactose, etc) or due to disruption of the villous structure of the small intestine.’
    • ‘Gluten causes the intestinal mucosa to lose its villous structure and absorptive capacity.’
    • ‘Increased perivillous fibrin was diagnosed when all nonperipheral placental sections showed that 5% or more of the terminal villi in the half of the villous parenchyma bordering the basal plate were enmeshed in a fibrinoid matrix.’
    • ‘Parameters for intestinal mucosal morphometry (number of villi, villous height, mucosal thickness) and number of mucous containing cells were determined.’
    • ‘Afterwards the samples were stained with haematoxylin-eosin to evaluate the number of villi, villous height and mucosal thickness and with PAS to identify mucous containing cells.’
    • ‘An aliquot of fetal cells was obtained from fetal villous tissue in each case, and the samples were examined by cytogenetic techniques.’
    • ‘They are also the most common adenomatous polyps (the villous pattern is the least common).’
    • ‘The architectural changes involve differences from normal structure, such as clustering and crowding of tubules, an exaggerated villous surface pattern, or the appearance of bridges of cells that cross lumens.’
    • ‘Finnish doctors say that examining villous tips in the small intestine for lymphocyte infiltration is a good way to distinguish people who have early signs of coeliac disease from those without.’
    • ‘But that's the situation you've got at the moment with amniocentesis and chorionic villous sampling; the only difference in this technology that it's before you've even become pregnant.’
    • ‘Researchers believe that simulated amniotic fluid, which contains enteric growth factors, promotes villous development.’
    • ‘A chorionic villous sampling test involves taking a sample of tissue from the placenta to measure certain markers in the blood.’
    • ‘This can be confirmed by chorionic villous sampling or amniocentesis.’
    • ‘The duodenal mucosa showed severe villous atrophy but no subepithelial collagen deposition.’
    • ‘The lesion measured approximately 4.5 cm in diameter and was composed predominantly of villous and branching papillary patterns.’
    • ‘The relationship between placental development and villous proliferation in the vessels is presented.’
    • ‘There was no evidence of villous abnormality or parasites on duodenal biopsy.’
    • ‘Colonoscopy revealed a soft, delicate, villous mass 14 cm from the anal verge.’
    • ‘It was a beautiful, round, full placenta: dark red on one side - the villous side, which had been attached to the wall of my womb - and glistening silver on Jacob's side, due to the covering of his membranes.’
    1. 1.1Medicine (of a condition) affecting the villi.
      ‘villous atrophy’
      • ‘From the data presented in Table 3, it appears that a close interlesional association exists between HEV and villitis of unknown etiology, fetal-placental vessel thrombi, villous fibrosis, and erythroblastosis.’
      • ‘Primary Infarcts.-Discrete areas of ischemic villous necrosis (primary infarcts) reflect obstruction to maternal - placental blood flow.’
      • ‘Results.-Lesions that were frequently coexistent in HEV-affected placentas included villitis of unknown etiology, chorionic thrombi, villous fibrosis, erythroblastosis, and primary infarcts.’
      • ‘Many apoptotic bodies were present, but mitosis was not prominent. sections demonstrating small intestinal mucosa adjacent to tumor showed no evidence of villous atrophy or crypt hyperplasia.’
      • ‘The data are less clear for asymptomatic screen-identified patients, particularly those who have truly silent celiac disease or who do not have fully developed villous atrophy.’
      • ‘Coeliac disease is characterised histologically by total or subtotal villous atrophy.’
      • ‘The morphologic differential diagnosis of mature B-cell neoplasms with cytoplasmic projections includes splenic lymphoma with villous lymphocytes and hairy cell leukemia.’
      • ‘Other primary epithelial tumors of the urachus include villous adenoma, transitional cell carcinoma, and, rarely, squamous cell carcinoma.’
      • ‘Approximately 10 percent of biopsynegative villous adenomas contain invasive cancer, even if those with induration, ulceration, and other signs of malignancy are excluded.’
      • ‘Thus, detection of adenomatous / villous polyps is being studied using a variety of techniques including barium enema, colonoscopy and CT.’
      • ‘Tubular polyps are pedunculated, whereas villous adenomatous polyps have broad bases and are larger.’
      • ‘IgA antiendomysial antibody testing has been reported to be 100 percent sensitive in patients with total villous atrophy.’
      • ‘Biopsy itself, when used with a strict cutoff requiring villous atrophy, appears to have high specificity but poor sensitivity.’
      • ‘Subsequent endoscopy and biopsy showed subtotal villous atrophy.’
      • ‘This becomes especially important when there is limited biopsy material from a distant metastasis that shows a small cell carcinoma and a colonic biopsy specimen that reveals a villous adenoma.’
      • ‘In their article, 4 of 5 cases were found to have villous or tubulovillous adenomas adjacent to the highly anaplastic carcinomas but with no obvious transition.’
      • ‘Repeat gastroscopy showed macroscopic features consistent with coeliac disease and duodenal biopsies showed total villous atrophy.’
      • ‘The villous adenoma from this patient demonstrated focal high-grade dysplasia but no apparent adenocarcinoma.’
      • ‘The vascular endothelium was destroyed by villous proliferation and trophoblastic invasion in this vessel.’
      • ‘In contrast to those of the large bowel, benign villous adenomas of the urinary tract are rare.’
    2. 1.2Botany Shaggy.
      • ‘The anthers are villous and the ovary is densely hispid.’



/ˈviləs/ /ˈvɪləs/