Definition of collenchyma in English:



mass nounBotany
  • Tissue strengthened by the thickening of cell walls, as in young shoots.

    • ‘In microscope sections note that vascular bundles are reinforced by a bundle of cortical collenchyma that form the characteristic stem ridges in Equisetum.’
    • ‘The lignified secondary walls could be recognized by a bluish glare (unlignified birefrigent walls, e.g. collenchyma, showed a reddish glare).’
    • ‘Heat-tolerant fescue PI297901 had larger cells and more sclerenchyma and collenchyma (supporting tissue) in between the vascular bundle and epidermal cells compared with PI283316.’
    • ‘Young axes have higher values of structural Young's modulus than do older stages and this is reflected by the presence of fibre tissues, primary phloem fibres and collenchyma placed near the periphery of young axes.’
    • ‘In addition, the xylem - because of its lignification, is a stiffer material compared to the living tissues: phloem, collenchyma and parenchyma.’


Mid 19th century: from Greek kolla ‘glue’ + enkhuma ‘infusion’.