from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Growing upward in a spiral that turns from right to left: a sinistrorse vine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Turning to the left (of the observer) in the ascending line.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Turning to the left (of the spectator) in the ascending line; -- the opposite of dextrorse. See dextrorse.

from The Century Dictionary and Cyclopedia

  • Turned or turning to the left; directed sinistrad; sinistrorsal: same as sinistral, but implying motion or direction rather than rest or position.
  • In botany, rising from left to right, as a climbing plant. For the antagonistic senses in which dextrorse and consequently its opposite sinistrorse are used, see dextrorse.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. spiraling upward from right to left


Latin sinistrōrsus, turned toward the left, contraction of *sinistrōversus : sinistrō, toward the left, from ablative of sinister, left + vorsus, past participle of vortere, variant of vertere, to turn.
(American Heritage® Dictionary of the English Language, Fourth Edition)
See sinistrorsal. (Wiktionary)



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