amorphicadj.

Brit.

/əˈmɔːfɪk/,

/eɪˈmɔːfɪk/, U.S.

/əˈmɔrfɪk/,

/eɪˈmɔrfɪk/

Origin: Formed within English, by derivation. Etymons: a- prefix⁶, -morphic comb. form.

Etymology: < a- prefix⁶ + -morphic comb. form. Compare earlier amorphous adj.In sense 2 after amorphism n. With sense 3 compare amorph n.

†1. Mineralogy. Of a body of rock: occurring in a continuous mass, without stratification. Obsolete. rare. Cf. amorphous adj. 3.

ΚΠ

1850 L. Agassiz in L. Agassiz & J. E. Cabot Lake Superior i. ii. 45 There is no rock in this region answering the description of true granite. We have granitic rocks enough, but none of an amorphic structure. All are more or less stratified.

1853 Black's Picturesque Guide to Trosachs 29 The chain consists generally of trap amorphic and columnar.

2. Mineralogy and Chemistry. Of a solid substance: not exhibiting a crystalline structure, non-crystalline; = amorphous adj. 2.

ΘΚΠ

the world > space > shape > lack of shape > [adjective]

huelessa1100

shapelessa1400

globose?a1425

deformed1555

fashionless1581

disformed1591

formless1591

unshapeful1598

figureless1606

informous1610

proportionless1625

unbodied1630

unshapable1630

misshapen1640

unshapeless1640

difform1644

inform1654

difformed1665

amorphous1727

amorphic1856

1856 Jrnl. Soc. Arts 5 Sept. 685/1 There are specimens of the greyish blue lias, in blocks of some tons weight, of an amorphic structure.

1885 A. B. Hervey tr. J. W. Behrens Microsc. in Bot. v. 429 More seldom they appear as crystals or crystalline forms, or also as amorphic masses in the cell membrane or cell contents.

1987 Nature 19 Nov. 253/1 The amorphic ferric oxide is synthesized by neutralizing a ferric chloride solution.

2012 L. F. Jeffus Welding (ed. 7) xxv. 645/1 Examples of amorphic materials include glass and silicon.

3. Genetics. Of a mutant allele: that is inactive and fails to produce a detectable product compared with the wild-type allele. Of a mutation: causing a complete loss of gene activity.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > allele > types of allele

neomorphic1903

amorphic1932

hypermorphic1932

hypomorphic1932

diallelic1944

isoallelic1944

1932 H. J. Muller in Proc. 6th Internat. Congr. Genetics I. 236 This latter type of mutant may..be called ‘amorphic’.

1949 C. D. Darlington & K. Mather Elements of Genetics vii. 152 The hypermorph is more efficient than the wild-type gene... The wild-type gene is hypomorphic to its hypermorphic mutant and amorphic to its neomorphic mutant.

1989 Nature 13 July 153/1 We do not know why Elp mutations predominantly affect the eye when amorphic mutations are lethal to the embryo.

2010 Jrnl. Heredity 101 223/1 Finally, nsp10, a nonsense mutation in codon 15 appears to be a true null or amorphic mutant.

This entry has been updated (OED Third Edition, September 2019; most recently modified version published online December 2021).

单词	amorphic
释义	amorphicadj. Brit. /əˈmɔːfɪk/, /eɪˈmɔːfɪk/, U.S. /əˈmɔrfɪk/, /eɪˈmɔrfɪk/ Origin: Formed within English, by derivation. Etymons: a- prefix⁶, -morphic comb. form. Etymology: < a- prefix⁶ + -morphic comb. form. Compare earlier amorphous adj.In sense 2 after amorphism n. With sense 3 compare amorph n. †1. Mineralogy. Of a body of rock: occurring in a continuous mass, without stratification. Obsolete. rare. Cf. amorphous adj. 3. ΚΠ 1850 L. Agassiz in L. Agassiz & J. E. Cabot Lake Superior i. ii. 45 There is no rock in this region answering the description of true granite. We have granitic rocks enough, but none of an amorphic structure. All are more or less stratified. 1853 Black's Picturesque Guide to Trosachs 29 The chain consists generally of trap amorphic and columnar. 2. Mineralogy and Chemistry. Of a solid substance: not exhibiting a crystalline structure, non-crystalline; = amorphous adj. 2. ΘΚΠ the world > space > shape > lack of shape > [adjective] huelessa1100 shapelessa1400 globose?a1425 deformed1555 fashionless1581 disformed1591 formless1591 unshapeful1598 figureless1606 informous1610 proportionless1625 unbodied1630 unshapable1630 misshapen1640 unshapeless1640 difform1644 inform1654 difformed1665 amorphous1727 amorphic1856 1856 Jrnl. Soc. Arts 5 Sept. 685/1 There are specimens of the greyish blue lias, in blocks of some tons weight, of an amorphic structure. 1885 A. B. Hervey tr. J. W. Behrens Microsc. in Bot. v. 429 More seldom they appear as crystals or crystalline forms, or also as amorphic masses in the cell membrane or cell contents. 1987 Nature 19 Nov. 253/1 The amorphic ferric oxide is synthesized by neutralizing a ferric chloride solution. 2012 L. F. Jeffus Welding (ed. 7) xxv. 645/1 Examples of amorphic materials include glass and silicon. 3. Genetics. Of a mutant allele: that is inactive and fails to produce a detectable product compared with the wild-type allele. Of a mutation: causing a complete loss of gene activity. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > allele > types of allele neomorphic1903 amorphic1932 hypermorphic1932 hypomorphic1932 diallelic1944 isoallelic1944 1932 H. J. Muller in Proc. 6th Internat. Congr. Genetics I. 236 This latter type of mutant may..be called ‘amorphic’. 1949 C. D. Darlington & K. Mather Elements of Genetics vii. 152 The hypermorph is more efficient than the wild-type gene... The wild-type gene is hypomorphic to its hypermorphic mutant and amorphic to its neomorphic mutant. 1989 Nature 13 July 153/1 We do not know why Elp mutations predominantly affect the eye when amorphic mutations are lethal to the embryo. 2010 Jrnl. Heredity 101 223/1 Finally, nsp10, a nonsense mutation in codon 15 appears to be a true null or amorphic mutant. This entry has been updated (OED Third Edition, September 2019; most recently modified version published online December 2021). < adj.1850
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