migman.

Brit.

/ˈmɪɡmə/, U.S.

/ˈmɪɡmə/

Origin: A borrowing from German. Etymon: German Migma.

Etymology: < German Migma (M. Reinhard 1935, in Vortrag in der Mijnbouwkundige Vereenining zu Delft 39) < ancient Greek μιγματ- , μίγμα mixture < the stem of μιγνύναι to mix (see mixed adj.²) + -μα (see -oma comb. form); probably adopted by Reinhard after German Magma (see magma n.). Compare earlier migmatite n., migmatic adj., migmatization n.

Geology.

A mixture of solid and molten rock.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > mixture of solid and igneous

migma1943

1943 Proc. Geologists' Assoc. 54 73 The migma, if the amount of its liquid portion became great enough, would flow and could intrude itself into its surroundings in typical eruptive or intrusive fashion.

1948 Mem. Geol. Soc. Amer. 28 46 Cloos and Rittmann (1939) use the term migma, for viscous domed masses (diapirs) rising in orogenic zones, in a way to leave it very uncertain whether there is a magma or not.

1952 T. F. W. Barth Theoret. Petrol. iv. xiii. 364 In the root parts of the folded mountains..a migma is formed that corresponds to the magma of the higher levels.

1974 Encycl. Brit. Micropædia VI. 880/1 Between these extremes is a concept of a pore fluid, or migma, generated by the differential melting or partial fusion of the root portions of mountains.

1990 Geol. Jrnl. 25 222 If a migma becomes a magma by some process, then the resulting rock would also be an igneous rock.

This entry has been updated (OED Third Edition, March 2002; most recently modified version published online March 2022).

单词	migma
释义	migman. Brit. /ˈmɪɡmə/, U.S. /ˈmɪɡmə/ Origin: A borrowing from German. Etymon: German Migma. Etymology: < German Migma (M. Reinhard 1935, in Vortrag in der Mijnbouwkundige Vereenining zu Delft 39) < ancient Greek μιγματ- , μίγμα mixture < the stem of μιγνύναι to mix (see mixed adj.²) + -μα (see -oma comb. form); probably adopted by Reinhard after German Magma (see magma n.). Compare earlier migmatite n., migmatic adj., migmatization n. Geology. A mixture of solid and molten rock. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > mixture of solid and igneous migma1943 1943 Proc. Geologists' Assoc. 54 73 The migma, if the amount of its liquid portion became great enough, would flow and could intrude itself into its surroundings in typical eruptive or intrusive fashion. 1948 Mem. Geol. Soc. Amer. 28 46 Cloos and Rittmann (1939) use the term migma, for viscous domed masses (diapirs) rising in orogenic zones, in a way to leave it very uncertain whether there is a magma or not. 1952 T. F. W. Barth Theoret. Petrol. iv. xiii. 364 In the root parts of the folded mountains..a migma is formed that corresponds to the magma of the higher levels. 1974 Encycl. Brit. Micropædia VI. 880/1 Between these extremes is a concept of a pore fluid, or migma, generated by the differential melting or partial fusion of the root portions of mountains. 1990 Geol. Jrnl. 25 222 If a migma becomes a magma by some process, then the resulting rock would also be an igneous rock. This entry has been updated (OED Third Edition, March 2002; most recently modified version published online March 2022). < n.1943
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