Definition of exudate in English:



  • 1An exuded substance, in particular.

    • ‘The sap was allowed to exude for 10 min and this exudate was discarded.’
    • ‘The osmotic potentials of xylem exudate and nutrient solution were determined using an osmometer.’
    • ‘They are contraindicated for infected wounds and have little capacity to absorb 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 color of the tympanic membrane did not correlate at all with the presence or absence of a pathogen isolated from the middle ear exudate.’
    • ‘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.’
    • ‘Previous columns have addressed products that are appropriate for dry wound beds or wounds with minimal exudate or drainage-namely, hydrogels and hydrocolloids.’
    • ‘Stalked, glandular trichome on surface of labellar callus with exudate that possibly contains terpenes.’
    • ‘Some studies have made use of the fact that sieve element exudate can be collected from cut stems.’
    • ‘In white patients, irritant dermatitis is initially observed as erythema of the skin that rapidly progresses to blistering, erosion, and exudate.’
    • ‘This problem could also be caused by the toxic exudates from damaged laticifers that affect the vascular tissues directly.’
    • ‘Dry gauze dressings may be chosen as the primary dressing for open wounds with heavy exudate; the gauze will wick away exudate.’
    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.’
      • ‘More severe inflammation of the mucosa is readily evident as erythema, intramucosal hemorrhage, exudate, or ulceration.’
      • ‘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.’
      • ‘Histologically, no cardial brain abscesses show purulent exudate surrounded by variable amounts of fibrosis.’
      • ‘Swabs of wound exudate are self-descriptive and are usually taken before cleansing the wound.’
      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.
      • ‘Independently, root pressure xylem exudate from detopped stem bases was also collected at the time of harvest.’
      • ‘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.’
      • ‘Alkaline phosphatase is not at all, or only in small amounts present in root exudates of vascular plants.’
      • ‘Cytokinins were analysed in leaf extracts, leaf phloem exudate and in the shoot apical meristem at different times during floral transition.’


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