- (from a point of view at the center of the spiral) rising spirally in a counterclockwise manner, as a stem (opposed to dextrorse).
Origin of sinistrorse
Examples from the Web for sinistrorse
Sinistrorse, sin′is-trors, adj. rising from left to right, as a spiral line.
- (of some climbing plants) growing upwards in a spiral from right to left, or clockwiseCompare dextrorse
Word Origin and History for sinistrorse
1856, a word wanted by the botanists to describe the direction of spiral structures in nature, from Latin sinistrorsus "toward the left side," from sinister "left" (see sinister). It was paired with dextrorse but confusion over what was the proper point of view to reckon leftward or rightward spiraling prevented the word being as useful as it might have been.