Definition of periclinal in English:

Share this entry


Pronunciation: /ˌpɛrɪˈklʌɪn(ə)l/


1(Of a cell wall) parallel to the surface of the meristem.
Example sentences
  • Guard-cell walls parallel to the root surface are considered periclinal.
  • Superficially it appears to be a periclinal chimera with a chlorophyll-deficient mutation in the second layer of the meristem.
  • Ornamentation of the periclinal walls could be used to discriminate four morphological types.
1.1(Of cell division) taking place by the formation of periclinal walls.
Example sentences
  • In a number of species, regardless of their wall formation type, new periclinal cell divisions may occur when the tapetum differentiates.
  • Most parenchyma cells continue to divide by periclinal divisions.
  • This process is initiated by anticlinal and periclinal divisions of a few callus cells only.



Example sentences
  • Because the aleurone cells continue to divide periclinally in the developing cereal endosperm the youngest cells are present in the sub-aleurone layer and the oldest cells in the central part of the endosperm.
  • The hypodermis is initiated by a separate layer of initials within the apical meristem that divides periclinally at least once to produce a biseriate to multiseriate zone of cells under the epidermis.
  • In the basic type of wall formation, all the cells in the secondary parietal layers divide once periclinally, forming four new layers.


Late 19th century: from Greek periklinēs 'sloping on all sides', from peri- 'around' + klinēs 'sloping' (from the verb klinein).

For editors and proofreaders

Line breaks: peri|clinal

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.