cast fossil

cast fossil
A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast, also called a mold fossil, which is in the general form of the original organism.

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  • cast — [[t]kæst, kɑst[/t]] v. cast, cast•ing, n. 1) to throw or hurl; fling: to cast dice; to cast aside the newspaper[/ex] 2) to direct (the eye, a glance, etc.) 3) to cause to fall; put or send forth: to cast a soft light; to cast a spell; to cast… …   From formal English to slang

  • cast — I. verb (cast; casting) Etymology: Middle English, from Old Norse kasta; akin to Old Norse kǫs heap Date: 13th century transitive verb 1. a. to cause to move or send forth by throwing < cast a fishing lure > < cast …   New Collegiate Dictionary

  • cast — [c]/kast / (say kahst) verb (cast, casting) –verb (t) 1. to throw; fling; hurl (away, off, out, etc.) 2. to throw off or away. 3. to direct (the eye, a glance, etc.) 4. to cause (light, etc.) to fall upon something or in a certain direction. 5.… …  

  • cast — n. [ON. kasta, throw] 1. Anything that is shed in a form resembling the original. 2. (ANNELIDA: Oligochaeta) The excrement of an earthworm. 3. (ARTHROPODA: Insecta) The molted exoskeletons of arthropod instars. 4. (MOLLUSCA) An extraneous… …   Dictionary of invertebrate zoology

  • fossil —    Any remains or traces of animals or plants that lived in the prehistoric past, whether bone, cast, track, imprint, pollen, or any other evidence of their existence [23] …   Lexicon of Cave and Karst Terminology

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