n.
1. Geology A chemical sediment or crust, as of porous silica, deposited by a mineral spring.
2. A mass formed by sintering. v. sin·tered , sin·ter·ing , sin·ters v. tr. To cause (metallic powder, for example) to form a coherent mass by heating without melting.
v. intr.
To form a coherent mass by heating without melting. [German, from Middle High German, dross, metal slag , from Old High German, a cognate of English "cinder".]