phyl·​lo·​tax·​is | \ ˌfi-lə-ˈtak-səs How to pronounce phyllotaxis (audio) \
variants: or less commonly phyllotaxy \ ˈfi-​lə-​ˌtak-​sē How to pronounce phyllotaxy (audio) \

Definition of phyllotaxis

1 : the arrangement of leaves on a stem and in relation to one another
2 : the study of phyllotaxis and of the laws that govern it

Examples of phyllotaxis in a Sentence

Recent Examples on the Web Botanists use the divergence angles, or angles between consecutive leaves, to define a plant’s phyllotaxis. Maddie Burakoff, Smithsonian, "Decoding the Mathematical Secrets of Plants’ Stunning Leaf Patterns," 6 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phyllotaxis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of phyllotaxis

1845, in the meaning defined at sense 1

History and Etymology for phyllotaxis

New Latin phyllotaxis, from phyll- + -taxis

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Time Traveler for phyllotaxis

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The first known use of phyllotaxis was in 1845

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Cite this Entry

“Phyllotaxis.” The Dictionary, Merriam-Webster Inc., Accessed 9 December 2019.

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