/sin'euh stral"i tee/ , n.
1. the state or quality of having the left side or its parts or members different from and, usually, more efficient than the right side or its parts or members; left-handedness.
2. preference for using the left hand or side.
3. the state of being sinistral. Cf. dextrality .
[ 1850-55; SINISTRAL + -ITY ]