Shale meaning

shāl
A fissile rock composed of layers of claylike, fine-grained sediments.
noun
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A kind of fine-grained, thinly bedded sedimentary rock formed largely by the hardening of clay: it splits easily into thin layers.
noun
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A fine-grained sedimentary rock consisting of compacted and hardened clay, silt, or mud. Shale forms in many distinct layers and splits easily into thin sheets or slabs. It varies in color from black or gray to brown or red.
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A shell or husk; a cod or pod.
noun
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(geology) A fine-grained sedimentary rock of a thin, laminated, and often friable, structure.
noun
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To take off the shell or coat of.
verb
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Origin of shale

  • Probably from Middle English shell from Old English scealu skel-1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Middle English schale 'shell, husk; scale', from Old English scealu 'shell, husk, pod', from Proto-Germanic *skalō (compare West Frisian skaal 'dish', Dutch schaal 'shell', German Schale 'husk, pod'), from Proto-Indo-European *(s)kelo- 'split, cleaved' (compare Lithuanian skalà 'splinter', Old Church Slavonic skala 'rock, stone', Albanian halë 'fish bone, splinter', Sanskrit kalá 'small part'), from *(s)kel- 'to split, cleave' (compare Hittite iÅ¡kalla 'to tear apart, slit open', Lithuanian skélti 'to split', Ancient Greek skállein 'to hoe, harrow').

    From Wiktionary