Definition of exudate in English:


Pronunciation /ˈeksyo͞oˌdāt//ˈeksədāt/


  • 1An exuded substance, in particular.

    • ‘Previous columns have addressed products that are appropriate for dry wound beds or wounds with minimal exudate or drainage-namely, hydrogels and hydrocolloids.’
    • ‘After approximately 3 h, xylem exudate was collected from the capillaries, pooled for the two to three plants that were used per species and immediately stored at - 20°C.’
    • ‘The color of the tympanic membrane did not correlate at all with the presence or absence of a pathogen isolated from the middle ear exudate.’
    • ‘They are contraindicated for infected wounds and have little capacity to absorb exudate.’
    • ‘In white patients, irritant dermatitis is initially observed as erythema of the skin that rapidly progresses to blistering, erosion, and exudate.’
    • ‘The clinician should select topical therapies that will reduce the bacterial load, contain exudate, and improve the qualities of the wound's granulation tissue.’
    • ‘The sap was allowed to exude for 10 min and this exudate was discarded.’
    • ‘Some studies have made use of the fact that sieve element exudate can be collected from cut stems.’
    • ‘Stalked, glandular trichome on surface of labellar callus with exudate that possibly contains terpenes.’
    • ‘Dry gauze dressings may be chosen as the primary dressing for open wounds with heavy exudate; the gauze will wick away exudate.’
    • ‘The osmotic potentials of xylem exudate and nutrient solution were determined using an osmometer.’
    • ‘This problem could also be caused by the toxic exudates from damaged laticifers that affect the vascular tissues directly.’
    1. 1.1Medicine A mass of cells and fluid that has seeped out of blood vessels or an organ, especially in inflammation.
      • ‘A similar reaction was present in the left ovary surrounding an abscess cavity containing purulent exudate and surrounded by dense fibrosis and chronic inflammation.’
      • ‘To be included in the analysis, patients had to have at least three of the following conditions concomitantly: fever, tonsillar exudate, tender anterior cervical lymph nodes and absence of cough.’
      • ‘More severe inflammation of the mucosa is readily evident as erythema, intramucosal hemorrhage, exudate, or ulceration.’
      • ‘Swabs of wound exudate are self-descriptive and are usually taken before cleansing the wound.’
      • ‘Histologically, no cardial brain abscesses show purulent exudate surrounded by variable amounts of fibrosis.’
      ooze, trickle, exude, drip, dribble, flow, issue, discharge, excrete, escape, leak, drain, bleed, sweat, well, leach, filter, percolate, permeate, soak
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    2. 1.2Botany Biology A substance secreted by a plant or insect.
      • ‘The chemical properties of plant litter and exudates strongly influence many chemical properties of soils that are critical to ecosystem functioning.’
      • ‘Moreover, the composition of exudates produced by glandular trichomes may change with leaf age.’
      • ‘Independently, root pressure xylem exudate from detopped stem bases was also collected at the time of harvest.’
      • ‘Cytokinins were analysed in leaf extracts, leaf phloem exudate and in the shoot apical meristem at different times during floral transition.’
      • ‘Alkaline phosphatase is not at all, or only in small amounts present in root exudates of vascular plants.’


Late 19th century: from Latin exsudat- exuded from the verb exsudare.