Archimedean, a.
(ɑːkɪˈmiːdɪən, -miːˈdiːən)
Also -ian.
[f. L. Archimēdē-us (f. next) + -an.]
Of, pertaining to, or invented by Archimedes.
Archimedean drill (see quot. 1940); Archimedean Screw or Archimedes' Screw: an instrument for raising water, formed by winding a tube into the form of a screw around a long cylinder.
| 1813 G. Edwards Meas. True Policy 29 An archimedean lever and fulcrum, able to sway..the World. 1829 Nat. Philos. I. ii. 8 (U.K.S.) The principle of the Archimedian Screw is occasionally adopted in the wheel-form. 1889 in Cent. Dict. 1914 Lancet 4 July 35/2, I have found the all-metal archimedean drill..much more satisfactory than other mechanical drills for making the screw-holes in plating fractures. 1940 Chambers's Techn. Dict. 48/2 Archimedean drill, a drill in which to-and-fro axial movement of a nut on a helix causes an alternating rotary motion of the bit. |