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phyllotaxis

American  
[fil-uh-tak-sis] / ˌfɪl əˈtæk sɪs /

noun

Botany.
phyllotaxes plural
  1. phyllotaxy.


phyllotaxis British  
/ ˌfɪləˈtæksɪs /

noun

  1. the arrangement of the leaves on a stem

  2. the study of this arrangement in different plants

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Etymology

Origin of phyllotaxis

First recorded in 1870–75; phyllo- + -taxis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The former condition represents a lower, the latter condition represents a higher, order of phyllotaxis.

From The Genus Pinus by Shaw, George Russell

There are two species of phyllotaxis, perfectly distinct, and we suppose, not mathematically reducible the one to the other, viz.:

From Darwiniana; Essays and Reviews Pertaining to Darwinism by Gray, Asa

Such are the majority of the scales of the cone and represent more or less indefinite conditions of phyllotaxis.

From The Genus Pinus by Shaw, George Russell

Four quadrangular scales in mutual contact represent the condition of definite phyllotaxis.

From The Genus Pinus by Shaw, George Russell

Most of the scales of a cone are in indefinite phyllotactic relation, while definite phyllotaxis is found only at points on the cone.

From The Genus Pinus by Shaw, George Russell

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