Definition of periclinal in English:

periclinal

Syllabification: per·i·cli·nal
Pronunciation: /ˌperiˈklīnl
 
/

adjective

Botany
  • 1(Of a cell wall) parallel to the surface of the meristem.
    More 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.
    More 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.

Derivatives

periclinally

adverb
More 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.

Origin

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

More definitions of periclinal

Definition of periclinal in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
noun
(in science fiction) navigation in outer space