a past participle of melt.
liquefied by heat; in a state of fusion; melted: molten lead.
produced by melting and casting: a molten image.

1250–1300; Middle English; old past participle of melt1

moltenly, adverb
supermolten, adjective
unmolten, adjective Unabridged


1 [melt]
verb (used without object), melted, melted or molten, melting.
to become liquefied by warmth or heat, as ice, snow, butter, or metal.
to become liquid; dissolve: Let the cough drop melt in your mouth.
to pass, dwindle, or fade gradually (often followed by away ): His fortune slowly melted away.
to pass, change, or blend gradually (often followed by into ): Night melted into day.
to become softened in feeling by pity, sympathy, love, or the like: The tyrant's heart would not melt.
Obsolete. to be subdued or overwhelmed by sorrow, dismay, etc.
verb (used with object), melted, melted or molten, melting.
to reduce to a liquid state by warmth or heat; fuse: Fire melts ice.
to cause to pass away or fade.
to cause to pass, change, or blend gradually.
to soften in feeling, as a person or the heart.
the act or process of melting; state of being melted.
something that is melted.
a quantity melted at one time.
a sandwich or other dish topped with melted cheese: a tuna melt.

before 900; Middle English melten, Old English meltan (intransitive), m(i)elten (transitive) to melt, digest; cognate with Old Norse melta to digest, Greek méldein to melt

meltable, adjective
meltability, noun
meltingly, adverb
meltingness, noun
nonmeltable, adjective
nonmelting, adjective
unmeltable, adjective
unmelted, adjective
unmelting, adjective

1. Melt, dissolve, fuse, thaw imply reducing a solid substance to a liquid state. To melt is to bring a solid to a liquid condition by the agency of heat: to melt butter. Dissolve though sometimes used interchangeably with melt applies to a different process, depending upon the fact that certain solids, placed in certain liquids, distribute their particles throughout the liquids: A greater number of solids can be dissolved in water and in alcohol than in any other liquids. To fuse is to subject a solid (usually a metal) to a very high temperature; it applies especially to melting or blending metals together: Bell metal is made by fusing copper and tin. To thaw is to restore a frozen substance to its normal (liquid, semiliquid, or more soft and pliable) state by raising its temperature above the freezing point: Sunshine will thaw ice in a lake. 4. dwindle. 10. gentle, mollify, relax. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
melt (mɛlt)
vb , melts, melting, melted, melted, molten
1.  to liquefy (a solid) or (of a solid) to become liquefied, as a result of the action of heat
2.  to become or make liquid; dissolve: cakes that melt in the mouth
3.  (often foll by away) to disappear; fade
4.  (foll by down) to melt (metal scrap) for reuse
5.  (often foll by into) to blend or cause to blend gradually
6.  to make or become emotional or sentimental; soften
7.  the act or process of melting
8.  something melted or an amount melted
[Old English meltan to digest; related to Old Norse melta to malt (beer), digest, Greek meldein to melt]

molten (ˈməʊltən)
1.  liquefied; melted: molten lead
2.  made by having been melted: molten casts
3.  the past participle of melt

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. meltan "become liquid" (class III strong verb; past tense mealt, pp. molten), from P.Gmc. *meltanan; fused with O.E. gemæltan (Anglian), gemyltan (W.Saxon) "make liquid," from P.Gmc. *gamaltijanan (cf. O.N. melta "to digest"), both from PIE *meld- "softness" (cf. Gk. meldein "to melt," L.
mollis "soft, mild"). Related: Melted; melting. Melting pot is from 1540s; figurative use from 1855; popularized with reference to America by play "The Melting Pot" by Israel Zangwill (1908).

late 13c., archaic pp. of O.E. meltian, a class III strong verb (see melt).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
melt   (mělt)  Pronunciation Key 
To change from a solid to a liquid state by heating or being heated with sufficient energy at the melting point. See also heat of fusion.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Once the material had melted, the researchers pulled the metal tip away, dragging material from the molten hotspot.
Metals and other inorganic materials that do not turn into gas fall to the
  bottom of the chamber as molten slag.
During the day, sunlight from a mirror field is used to heat molten salt.
Molten salt is the real game changer for solar thermal because it allows for
  nighttime production.
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