单词 | mantle |
释义 | mantle [`mant·ǝl] ANATOMY Collectively, the convolutions, corpus callosum, and fornix of the brain. BIOLOGY An enveloping layer, as the external body wall lining the shell of many invertebrates, or the external meristematic layers in a stem apex. ENGINEERING A lacelike hood or envelope (sack) of refractory material which, when positioned over a flame and heated to incandescence, gives light. GEOLOGY The intermediate shell zone of the earth below the crust and above the core (to a depth of 2160 miles or 3480 kilometers). METALLURGY That part of the outer wall and casing of a blast furnace located above the hearth. VERTEBRATE ZOOLOGY The back and wing plumage of a bird if distinguished from the rest of the plumage by a uniform color. |
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