Definition of pericycle in US English:



  • A thin layer of plant tissue between the endodermis and the phloem.

    • ‘These observations suggest that the cells in the pericycle of alloxan-treated plants are much more transcriptionally active than their control counterparts.’
    • ‘The pericycle forms the outermost layer of the central cylinder.’
    • ‘These layers include the epidermis, an exodermis in roots where it is differentiated, several layers of cortex cells, the endodermis, pericycle, xylem parenchyma cells and finally the vessels.’
    • ‘The pericycle and endodermis were both present, each as a single sheath of cells located between the cortex and stele.’
    • ‘In addition, the host pericycle and endodermis in contact with abortive haustoria were deformed in many cases.’


Late 19th century: from Greek perikuklos ‘spherical’, from perikukloun ‘encircle’.