1 [mohld]
a hollow form or matrix for giving a particular shape to something in a molten or plastic state.
the shape created or imparted to a thing by a mold.
something formed in or on a mold: a mold of jelly.
a frame on which something is formed or made.
shape or form.
a prototype, example, or precursor.
a distinctive nature, character, or type: a person of a simple mold.
a three-dimensional pattern used to shape a plate after it has been softened by heating.
a template for a frame.
a group of moldings.
verb (used with object)
to work into a required shape or form; shape.
to shape or form in or on a mold.
Metallurgy. to form a mold of or from, in order to make a casting.
to produce by or as if by shaping material; form.
to have influence in determining or forming: to mold the character of a child.
to ornament with moldings.
Also, especially British, mould.

1175–1225; (noun) Middle English molde < Old French modle < Latin modulus module; (v.) Middle English, derivative of the noun

moldable, adjective
moldability, noun Unabridged


2 [mohld]
a growth of minute fungi forming on vegetable or animal matter, commonly as a downy or furry coating, and associated with decay or dampness.
any of the fungi that produce such a growth.
verb (used with object), verb (used without object)
to become or cause to become overgrown or covered with mold.
Also, especially British, mould.

1150–1200; late Middle English mowlde, apparently noun use of variant of earlier mowled, past participle of moulen, mawlen to grow moldy, cognate with dialectal Danish mugle Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
mold (məʊld)
n, —vb
the US spelling of mould

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

"hollow shape," 12c., metathesized from O.Fr. modle (Fr. moule), from L. modulum (nom. modulus) "measure, model," dim. of modus "manner" (see mode (1)). Related: Molded. To break the mold "render impossible the creation of another" is from 1560s.

"fungus," early 15c., probably from moulde, pp. of moulen "to grow moldy" (early 13c.), related to O.N. mygla "grow moldy," from P.Gmc. *mug-. Or it may have evolved from (or been influenced by) O.E. molde "loose earth" (see mold (3)).

"loose earth," O.E. molde "earth," from P.Gmc. *mulda (cf. O.Fris. molde, O.N. mold "earth," O.H.G. molta "dust, earth," Goth. mulda "dust"), from PIE base *mel- "to rub, grind" (see meal (2)). Specifically, in late (Christian) O.E., "the earth of the grave."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

mold 1 (mōld)

  1. A shaped receptacle into which material is pressed or poured in making a cast.

  2. A frame around which something is formed or shaped.

  3. The shape of an artificial tooth or teeth.

v. mold·ed, mold·ing, molds
  1. To shape a mass of plastic material in or on a mold.

  2. To change in shape. Used especially of the adaptation of the fetal head to the pelvic canal.

mold'a·ble adj.

mold 2
Any of various filamentous fungi, generally a circular colony having a woolly or furry appearance, that grow on the surface of organic matter and contribute to its disintegration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
mold   (mōld)  Pronunciation Key 
Any of various fungi that often form a fuzzy growth (called a mycelium) on the surface of organic matter. Some molds cause food to spoil, but others are beneficial, such as those used to make certain cheeses and those from which antibiotics like penicillin are developed. The molds do not form a distinct phylogenetic grouping but belong to various phyla including the ascomycetes and the zygomycetes. See also slime mold.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Mack says the mouthpieces don't shift around excessively during play because
  they are molded to a player's mouth.
Otherwise the moon cheese would have all molded a long time ago.
We are human that have been molded in pour own ways.
The pork patty itself is something of a technological marvel, with emulsified
  bits of pork meat molded into the shape of ribs.
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