parastichy

P3A1R1A1S1T1I1C3H4Y4

noun

A secondary spiral of leaves or florets.

OriginAncient Greek παρά →
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Meanings

nounparastichy (plural parastichies)

plural parastichies

  1. biologyA secondary spiral of leaves or florets.
    1 more example

    As the name suggests, it is possible to trace spiral curves in the pattern. These curves are called parastichies. The parastichies winding in the same direction around the stem with the same pitch constitute one family of parastichies, and two easily perceived sets of parastichies winding in opposite direction are called a parastichy pair.

    2012, Efi Fogel, CGAL Arrangements and Their Applications: A Step-by-Step Guide

Origin

  1. Ancient Greekπαρά
  2. Englishparastichy

Ancient Greek παρά (pará) + στίχος (stíkhos, “row”).

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Cite this entry
APA

parastichy. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/parastichy

MLA

“parastichy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/parastichy. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “parastichy,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/parastichy.

Source: parastichy on Wiktionary, CC BY-SA 4.0.