Definition of mucin in English:



mass nounBiochemistry
  • A glycoprotein constituent of mucus.

    ‘mucin is secreted by the salivary glands’
    • ‘Slight turbidity is a result of mucin secreted by the lining of the urinary tract.’
    • ‘Although more than 95% of the airway secretion consists of water, the main glycoprotein contained in the airway secretion is mucin.’
    • ‘The mucin is secreted by tiny glands called goblet cells in the conjunctiva.’
    • ‘Most of the organic material in saliva is protein, some of which is glycoprotein or mucin, which contains both carbohydrate and protein components.’
    • ‘The best example of such a gel is mammalian mucus, which is based on the glycoprotein mucin.’


Mid 19th century: from mucus + -in.