Definition of hyperplasia in English:



mass nounBiology Medicine
  • The enlargement of an organ or tissue caused by an increase in the reproduction rate of its cells, often as an initial stage in the development of cancer.

    ‘hyperplasia of the endocrine cells’
    count noun ‘the hyperplasias regressed in five patients’
    • ‘Furthermore, increased goblet cell hyperplasia of the small airways was prominent in this model.’
    • ‘Water-clear cell hyperplasia is a rare but well-documented cause of primary hyperparathyroidism.’
    • ‘Smooth enlargement suggests benign hyperplasia; roughness and irregularity suggest the possibility of cancer.’
    • ‘Such factors might include the presence of benign prostatic hyperplasia or prostate cancer.’
    • ‘No women were found to have endometrial carcinoma or adenomatous hyperplasia with atypia.’


Mid 19th century: from hyper- ‘beyond’ + Greek plasis ‘formation’.