— sinistrorsely /sin"euh strawrs'lee, sin'euh strawrs"-/ , adv.
/sin"euh strawrs', si nis"trawrs, sin'euh strawrs"/ , adj. Bot.
(from a point of view at the center of the spiral) rising spirally in a counterclockwise manner, as a stem (opposed to dextrorse ).
[ 1855-60; sinistrorsus lit., turned leftwards, contr. of * sinistriversus. See SINISTER, VERSUS ]