magnetosomen.

Brit.

/maɡˈniːtə(ʊ)ˌsəʊm/, U.S.

/mæɡˈnɛdəˌsoʊm/,

/mæɡˈnidəˌsoʊm/

Origin: Formed within English, by derivation. Etymons: magneto- comb. form, -some comb. form.

Etymology: < magneto- comb. form + -some comb. form.

Biology.

Any of the intracellular, membrane-bound crystals of the iron oxide magnetite (or, rarely, of an iron sulphide such as greigite) found, usually arranged in a chain, in magnetotactic bacteria and certain other magnetotactic organisms.

ΚΠ

1980 D. L. Balkwill et al. in Jrnl. Bacteriol. 141 1407/2 We propose that the electron-dense particles and their associated bounding layers in magnetotactic bacteria be termed ‘magnetosomes’ in view of their structural and chemical nature, as well as their functional role in bacterial magnetotaxis.

1981 Sci. Amer. Dec. 44/2 The enclosed particles, which are about 500 angstrom units across, are referred to as magnetosomes.

1993 Nature 18 Nov. 218/1 Magnetotactic bacteria, a diverse group of Gram-negative prokaryotes that orient along geomagnetic field lines, contain magnetosomes, membrane-bounded intracellular single-magnetic-domain particles of either an iron oxide, magnetite (Fe₃O₄).., or an iron sulphide, greigite (Fe₃S₄).

This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022).

单词	magnetosome
释义	magnetosomen. Brit. /maɡˈniːtə(ʊ)ˌsəʊm/, U.S. /mæɡˈnɛdəˌsoʊm/, /mæɡˈnidəˌsoʊm/ Origin: Formed within English, by derivation. Etymons: magneto- comb. form, -some comb. form. Etymology: < magneto- comb. form + -some comb. form. Biology. Any of the intracellular, membrane-bound crystals of the iron oxide magnetite (or, rarely, of an iron sulphide such as greigite) found, usually arranged in a chain, in magnetotactic bacteria and certain other magnetotactic organisms. ΚΠ 1980 D. L. Balkwill et al. in Jrnl. Bacteriol. 141 1407/2 We propose that the electron-dense particles and their associated bounding layers in magnetotactic bacteria be termed ‘magnetosomes’ in view of their structural and chemical nature, as well as their functional role in bacterial magnetotaxis. 1981 Sci. Amer. Dec. 44/2 The enclosed particles, which are about 500 angstrom units across, are referred to as magnetosomes. 1993 Nature 18 Nov. 218/1 Magnetotactic bacteria, a diverse group of Gram-negative prokaryotes that orient along geomagnetic field lines, contain magnetosomes, membrane-bounded intracellular single-magnetic-domain particles of either an iron oxide, magnetite (Fe₃O₄).., or an iron sulphide, greigite (Fe₃S₄). This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022). < n.1980
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