heterosphere

[′hed·ə·rə‚sfir] (meteorology) The upper portion of a two-part division of the atmosphere (the lower portion is the homosphere) according to the general homogeneity of atmospheric composition; characterized by variation in composition, and in mean molecular weight of constituent gases; starts at 50-62 miles (80-100 kilometers) above the earth and therefore closely coincides with the ionosphere and the thermosphere.

heterosphere

The upper portion of a two-part division of the atmosphere according to the general homogeneity of atmospheric composition; the layer above the homosphere. The heterosphere is characterized by variation in the composition and the mean molecular weight of constituent gases. This region starts at 50 to 60 miles (80–100 km) above the earth and, therefore, closely coincides with the ionosphere and the thermosphere.

单词	heterosphere
释义	heterosphere heterosphere [′hed·ə·rə‚sfir] (meteorology) The upper portion of a two-part division of the atmosphere (the lower portion is the homosphere) according to the general homogeneity of atmospheric composition; characterized by variation in composition, and in mean molecular weight of constituent gases; starts at 50-62 miles (80-100 kilometers) above the earth and therefore closely coincides with the ionosphere and the thermosphere. heterosphere The upper portion of a two-part division of the atmosphere according to the general homogeneity of atmospheric composition; the layer above the homosphere. The heterosphere is characterized by variation in the composition and the mean molecular weight of constituent gases. This region starts at 50 to 60 miles (80–100 km) above the earth and, therefore, closely coincides with the ionosphere and the thermosphere.
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