Hot liquid that results from the melting of solid material at great temperatures.
[adj] - reduced to liquid form by heating
• (p. p.) of Melt • (a.) Melted; being in a state of fusion, esp. when the liquid state is produced by a high degree of heat; as, molten iron. • (a.) Made by melting and casting the substance or metal of which the thing is formed; as, a molten image.
adjective reduced to liquid form by heating; `a mass of molten rock`
Mol'ten adjective [ See Melt .] 1. Melted; being in a state of fusion, esp. when the liquid state is produced by a high degree of heat; as, molten iron. 2. Made by melting and casting the substance or metal of which the thing is formed; as, a molten image. 
State of a solid that has been heated until it melts.