— rectilinearly , adv.
/rek'tl in"ee euhr/ , adj.
1. forming a straight line.
2. formed by straight lines.
3. characterized by straight lines.
4. moving in a straight line.
Also, rectilineal .
[ 1650-60; rectiline ( us ) ( recti- RECTI- + line ( a ) LINE 1 + -us adj. suffix) + -AR 1 ]