mesogloean.

Brit.

/ˌmɛsə(ʊ)ˈɡliːə/, U.S.

/ˌmɛzoʊˈɡliə/; see also meso- comb. form.

Forms: 1800s– mesoglaea, 1800s– mesogloea, 1900s– mesoglea, 1900s– mesogloia.

Origin: A borrowing from Latin. Etymon: Latin Mesogloia.

Etymology: < scientific Latin Mesogloia, genus name (C. Agardh Synopsis Algarum Scand. (1817) xxxvii) < meso- meso- comb. form + ancient Greek γλοίος glutinous substance (compare Byzantine Greek γλοία or γλοιά glue: see gloiocarp n.). In sense 2 probably an independent formation.

1. Botany. Usually in form Mesogloia. A genus of brown algae (family Chordariaceae); an alga of this genus.

ΚΠ

1857 M. J. Berkeley Introd. Cryptogamic Bot. §67. 88 In other cases, doubtless, two kinds of Zoospores are produced, as in Leathesia and Mesogloea, as they have the two organs called Oosporangia and Trichosporangia by Thuret.

1896 Bot. Gaz. 21 142 Such forms as species of Leathesia, Mesogloia, Laminaria, etc., when crushed, spread out and show the cell structure and cell arrangement in a very satisfactory fashion.

1932 New Phytologist 31 221 Mesogloia now comes into line with Laminaria in having a macroscopic asexual phase..alternating with a microscopic gametophyte phase..; the former is restricted to the summer and the latter to the winter.

1987 R. L. Fletcher Seaweeds Brit. Isles III. i. 16 In the chordariacean genera Mesogloia and Spermatochnus there is a single erect axis the branch derivatives of which are compacted together to form the solid, gelatinous thallus.

2. Zoology. In coelenterates and ctenophores: a layer between the endoderm and the ectoderm, lacking organized cellular structure and often gelatinous in consistency. Also: the mesenchyme of a sponge (now rare).

ΚΠ

1886 R. von Lendenfeld in Proc. Zool. Soc. 574 Silicea with soft mesoglœa or mesodermal ground substance.

a1933 J. A. Thomson Biol. for Everyman (1934) I. iv. 72 The sponges, like the stinging animals.., have two layers of cells..and between them an indefinite middle stratum (mesogloea).

1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) vii. 94 In the medusa..the mesoglea is much more abundant and is of jellylike consistency; owing to this the medusa is sometimes called a ‘jellyfish’.

1992 Nature Canada Fall 13/1 The creature is a mass of jellylike stuff (mesoglea) sandwiched between an outer and an inner layer of cells.

Derivatives

mesoˈgloeal adj.

ΚΠ

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 806 A delicate free process, springing from a mesoglæal cell with one or more basal outrunners.

1966 J. H. Barnes in W. J. Rees Cnidaria 314 Exumbrellar mesogloeal tissue.

1987 M. S. Laverack & J. Dando Lect. Notes Invertebr. Zool. (ed. 3) iv. 32/2 The structural skeleton..may be of calcium carbonate.., or may be an endoskeleton formed by mesogloeal cells, of collagen-like gorgonin.

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

单词	mesogloea
释义	mesogloean. Brit. /ˌmɛsə(ʊ)ˈɡliːə/, U.S. /ˌmɛzoʊˈɡliə/; see also meso- comb. form. Forms: 1800s– mesoglaea, 1800s– mesogloea, 1900s– mesoglea, 1900s– mesogloia. Origin: A borrowing from Latin. Etymon: Latin Mesogloia. Etymology: < scientific Latin Mesogloia, genus name (C. Agardh Synopsis Algarum Scand. (1817) xxxvii) < meso- meso- comb. form + ancient Greek γλοίος glutinous substance (compare Byzantine Greek γλοία or γλοιά glue: see gloiocarp n.). In sense 2 probably an independent formation. 1. Botany. Usually in form Mesogloia. A genus of brown algae (family Chordariaceae); an alga of this genus. ΚΠ 1857 M. J. Berkeley Introd. Cryptogamic Bot. §67. 88 In other cases, doubtless, two kinds of Zoospores are produced, as in Leathesia and Mesogloea, as they have the two organs called Oosporangia and Trichosporangia by Thuret. 1896 Bot. Gaz. 21 142 Such forms as species of Leathesia, Mesogloia, Laminaria, etc., when crushed, spread out and show the cell structure and cell arrangement in a very satisfactory fashion. 1932 New Phytologist 31 221 Mesogloia now comes into line with Laminaria in having a macroscopic asexual phase..alternating with a microscopic gametophyte phase..; the former is restricted to the summer and the latter to the winter. 1987 R. L. Fletcher Seaweeds Brit. Isles III. i. 16 In the chordariacean genera Mesogloia and Spermatochnus there is a single erect axis the branch derivatives of which are compacted together to form the solid, gelatinous thallus. 2. Zoology. In coelenterates and ctenophores: a layer between the endoderm and the ectoderm, lacking organized cellular structure and often gelatinous in consistency. Also: the mesenchyme of a sponge (now rare). ΚΠ 1886 R. von Lendenfeld in Proc. Zool. Soc. 574 Silicea with soft mesoglœa or mesodermal ground substance. a1933 J. A. Thomson Biol. for Everyman (1934) I. iv. 72 The sponges, like the stinging animals.., have two layers of cells..and between them an indefinite middle stratum (mesogloea). 1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) vii. 94 In the medusa..the mesoglea is much more abundant and is of jellylike consistency; owing to this the medusa is sometimes called a ‘jellyfish’. 1992 Nature Canada Fall 13/1 The creature is a mass of jellylike stuff (mesoglea) sandwiched between an outer and an inner layer of cells. Derivatives mesoˈgloeal adj. ΚΠ 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 806 A delicate free process, springing from a mesoglæal cell with one or more basal outrunners. 1966 J. H. Barnes in W. J. Rees Cnidaria 314 Exumbrellar mesogloeal tissue. 1987 M. S. Laverack & J. Dando Lect. Notes Invertebr. Zool. (ed. 3) iv. 32/2 The structural skeleton..may be of calcium carbonate.., or may be an endoskeleton formed by mesogloeal cells, of collagen-like gorgonin. This entry has been updated (OED Third Edition, September 2001; most recently modified version published online June 2022). < n.1857
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