mold

1 [mohld]
noun
1.
a hollow form or matrix for giving a particular shape to something in a molten or plastic state.
2.
the shape created or imparted to a thing by a mold.
3.
something formed in or on a mold: a mold of jelly.
4.
a frame on which something is formed or made.
5.
shape or form.
6.
a prototype, example, or precursor.
7.
a distinctive nature, character, or type: a person of a simple mold.
8.
Shipbuilding.
a.
a three-dimensional pattern used to shape a plate after it has been softened by heating.
b.
a template for a frame.
9.
Architecture.
a.
b.
a group of moldings.
verb (used with object)
10.
to work into a required shape or form; shape.
11.
to shape or form in or on a mold.
12.
Metallurgy. to form a mold of or from, in order to make a casting.
13.
to produce by or as if by shaping material; form.
14.
to have influence in determining or forming: to mold the character of a child.
15.
to ornament with moldings.
Also, especially British, mould.


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

moldable, adjective
moldability, noun
Dictionary.com Unabridged

mold

2 [mohld]
noun
1.
a growth of minute fungi forming on vegetable or animal matter, commonly as a downy or furry coating, and associated with decay or dampness.
2.
any of the fungi that produce such a growth.
verb (used with object), verb (used without object)
3.
to become or cause to become overgrown or covered with mold.
Also, especially British, mould.


Origin:
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

mold

3 [mohld]
noun
1.
loose, friable earth, especially when rich in organic matter and favorable to the growth of plants.
2.
British Dialect. ground; earth.
Also, especially British, mould.


Origin:
before 900; Middle English, Old English molde earth, dust, ground; cognate with Gothic mulda dust; akin to meal2, mill1

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
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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Etymonline
Word Origin & History

mold
"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.

mold
"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)).

mold
"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)
n.

  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
n.
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 for Molds
This is essentially true of oriental molds made of other substances, such as
  bamboo.
Some fungi become noticeable when fruiting, either as mushrooms or molds.
These molds are made of wet sands that are used to make the molds shape.
This increased tremendously the green and dry strength of the molds.
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