alundumn.
/əˈlʌndəm/, U.S. /əˈləndəm/ A proprietary name for: a hard, heat-resistant material produced by fusing alumina in an electric furnace, used chiefly as an abrasive agent.
ΘΚΠ
society > occupation and work > materials > derived or manufactured material > other manufactured or derived materials > [noun] > from minerals
rockwool1816
ambroid1887
alundum1903
1903 Machinery (N.Y.) Aug. 103 (advt.) ‘Norton’ Emery, Corundum and Alundum Wheels.
1918 Nature 4 July 350/2 The fusion of bauxite gives another abrasive, alundum, which has practically superseded other materials for the grinding of steel.
1975 Pop. Mech. 136/2 You will also need 80-grit silicon carbide or Alundum abrasive powder from lapidary supply houses or hobby shops catering to amateur telescope makers.
2009 S. Di Pilla Slip, Trip, & Fall Prevention (ed. 2) vi. 198 Some terrazzo is made with nonslip materials added, such as alundum grit.
This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).
<
n.1903