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allomorph    音标拼音: ['æləmɔrf]
同质异晶; 同质异象变体

同质异晶; 同质异象变体

allomorph
n 1: any of several different crystalline forms of the same
chemical compound; "calcium carbonate occurs in the
allomorphs calcite and aragonite"
2: a variant phonological representation of a morpheme; "the
final sounds of `bets' and `beds' and `horses' and `oxen' are
allomorphs of the English plural morpheme"

Paramorph \Par"a*morph\, n. [Pref. para- Gr. morfh` form.]
1. (Min.) A kind of pseudomorph, in which there has been a
change of physical characters, by a change in crystal
structure without alteration of chemical composition, as
the change of aragonite to calcite; called also
{allomorph}.
[1913 Webster PJC]

2. (Biol.) A taxonomic variant observed within a species, for
which a more specific term has not been assigned.
[PJC] -- {par`a*mor"phic}, a. -- {par`a*mor"phous}, a.
[PJC]


Allomorph \Al"lo*morph\, n. [Gr. ? other morfh` form.] (Min.)
(a) Any one of two or more distinct crystalline forms of
the same substance; or the substance having such
forms; -- as, carbonate of lime occurs in the
allomorphs calcite and aragonite.
(b) A variety of pseudomorph which has undergone partial
or complete change or substitution of material; --
thus limonite is frequently an allomorph after pyrite.
--G. H. Williams.
[1913 Webster]


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