Right″–hand′ed, a. 1. Using the right hand habitually, or more easily than the left.
2. Having the same direction or course as the movement of the hands of a watch seen in front; — said of the motion of a revolving object looked at from a given direction.
3. (Zoöl.) Having the whorls rising from left to right; dextral; — said of spiral shells. See Illust. of Scalaria.
Right-handed screw, a screw, the threads of which, like those of a common wood screw, wind spirally in such a direction that the screw advances away from the observer when turned with a right-handed movement in a fixed nut.