microcystn.

Brit.

/ˈmʌɪkrə(ʊ)sɪst/, U.S.

/ˈmaɪkroʊˌsɪst/,

/ˈmaɪkrəˌsɪst/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: micro- comb. form, cyst n.

Etymology: < micro- comb. form + cyst n., after German Microcyste (L. Cienkowski 1863, in Jahrbücher f. wissenschaftliche Botanik 3 422). Compare macrocyst n.

1. Mycology and Microbiology. Originally: an encysted myxamoeba with a thick, protective cell wall. Later also: a small, encapsulated resting cell produced by many myxobacteria.

ΘΚΠ

the world > life > biology > substance > cell > types of cells > [noun] > motile or amoebic cell

myxamoeba1875

immigrant1885

microcyst1887

amœbocyte1892

wandering cells1896

streptocyte1897

swarmer cell1950

swarmer1964

1887 H. E. F. Garnsey & I. B. Balfour tr. H. A. de Bary Compar. Morphol. & Biol. Fungi 427 The term Microcyst was given by Cienkowski to the resting-state of the swarm-cells [of Myxomycetes].

1902 Proc. Boston Soc. Nat. Hist. 30 452 Slow drying or unfavourable conditions may induce the temporary encystment of the individuals, which thus form isolated ‘microcysts’.

1902 Proc. Boston Soc. Nat. Hist. 30 467 Fayod describes a peculiar method of microcyst formation in Guttulina protea.

1946 Nature 23 Nov. 745/1 An inoculum of myxococcal microcysts.

1964 Science 9 Oct. 243/1 Part of the life cycle of the fruiting myxobacterium, Myxococcus xanthus, involves the conversion of vegetative rods to round refractile cells called microcysts.

1973 R. G. Krueger et al. Introd. Microbiol. iii. 60/2 Sporocytophaga types can form microcysts; a vegetative cell ceases growth, becomes approximately spheric, and builds a thick outer wall.

1986 M. Kogut tr. H. G. Schlegel Gen. Microbiol. xiii. 402 They form cysts with thickened walls (‘arthrospores’, ‘microcysts’) when the nutrient supply is poor.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) i. 83/2 Sporocytophaga, which forms small, resistant cells called microcysts.

2. Pathology. A microscopic or very small cyst ( 2).

ΚΠ

1890 G. M. Gould New Med. Dict. 262/2 Microcyst, a cyst of diminutive size, or one derived from another.

1937 Science 17 Dec. 567/1 The glandular structures became dilated and irregular in outline with the formation of microcysts in some specimens.

1963 Pediatrics 31 413/2 Microcysts of the gingiva have been reported infrequently.

1967 Science 30 June 1743/1 Microscopic examination revealed..isolated microcysts in the renal cortex.

1985 European Jrnl. Surg. Oncol. 11 151 This composition suggests an apocrine derivation of the constituents of breast microcysts.

1996 Proc. National Acad. Sci. U.S.A. 93 1526/2 Rare analyses of renal tissue from PKD1 affected fetuses have shown tubular and glomerular microcysts as early as 12 weeks of gestation.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	microcyst
释义	microcystn. Brit. /ˈmʌɪkrə(ʊ)sɪst/, U.S. /ˈmaɪkroʊˌsɪst/, /ˈmaɪkrəˌsɪst/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: micro- comb. form, cyst n. Etymology: < micro- comb. form + cyst n., after German Microcyste (L. Cienkowski 1863, in Jahrbücher f. wissenschaftliche Botanik 3 422). Compare macrocyst n. 1. Mycology and Microbiology. Originally: an encysted myxamoeba with a thick, protective cell wall. Later also: a small, encapsulated resting cell produced by many myxobacteria. ΘΚΠ the world > life > biology > substance > cell > types of cells > [noun] > motile or amoebic cell myxamoeba1875 immigrant1885 microcyst1887 amœbocyte1892 wandering cells1896 streptocyte1897 swarmer cell1950 swarmer1964 1887 H. E. F. Garnsey & I. B. Balfour tr. H. A. de Bary Compar. Morphol. & Biol. Fungi 427 The term Microcyst was given by Cienkowski to the resting-state of the swarm-cells [of Myxomycetes]. 1902 Proc. Boston Soc. Nat. Hist. 30 452 Slow drying or unfavourable conditions may induce the temporary encystment of the individuals, which thus form isolated ‘microcysts’. 1902 Proc. Boston Soc. Nat. Hist. 30 467 Fayod describes a peculiar method of microcyst formation in Guttulina protea. 1946 Nature 23 Nov. 745/1 An inoculum of myxococcal microcysts. 1964 Science 9 Oct. 243/1 Part of the life cycle of the fruiting myxobacterium, Myxococcus xanthus, involves the conversion of vegetative rods to round refractile cells called microcysts. 1973 R. G. Krueger et al. Introd. Microbiol. iii. 60/2 Sporocytophaga types can form microcysts; a vegetative cell ceases growth, becomes approximately spheric, and builds a thick outer wall. 1986 M. Kogut tr. H. G. Schlegel Gen. Microbiol. xiii. 402 They form cysts with thickened walls (‘arthrospores’, ‘microcysts’) when the nutrient supply is poor. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) i. 83/2 Sporocytophaga, which forms small, resistant cells called microcysts. 2. Pathology. A microscopic or very small cyst ( 2). ΚΠ 1890 G. M. Gould New Med. Dict. 262/2 Microcyst, a cyst of diminutive size, or one derived from another. 1937 Science 17 Dec. 567/1 The glandular structures became dilated and irregular in outline with the formation of microcysts in some specimens. 1963 Pediatrics 31 413/2 Microcysts of the gingiva have been reported infrequently. 1967 Science 30 June 1743/1 Microscopic examination revealed..isolated microcysts in the renal cortex. 1985 European Jrnl. Surg. Oncol. 11 151 This composition suggests an apocrine derivation of the constituents of breast microcysts. 1996 Proc. National Acad. Sci. U.S.A. 93 1526/2 Rare analyses of renal tissue from PKD1 affected fetuses have shown tubular and glomerular microcysts as early as 12 weeks of gestation. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1887
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