Meaning of sinistrorse

sin•is•trorse

Pronunciation: (sin'u-strôrs", si-nis'trôrs, sin"u-strôrs'), [key]
— adj. Bot.
  1. (from a point of view at the center of the spiral) rising spirally in a counterclockwise manner, as a stem (opposed to dextrorse).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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