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cryptozoic

[ krip-tuh-zoh-ik ]

adjective

  1. (initial capital letter) Geology. of or relating to that part of Precambrian time whose stratigraphic record yields only sparse, primitive fossils.
  2. Zoology. living in concealed or secluded places.

noun

  1. (initial capital letter) Geology. the part of Precambrian time whose stratigraphic record yields only sparse, primitive fossils.

cryptozoic

1

/ ˌkrɪptəʊˈzəʊɪk /

adjective

  1. (of animals) living in dark places, such as holes, caves, and beneath stones
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cryptozoic

2

/ ˌkrɪptəʊˈzəʊɪk /

adjective

  1. of or relating to that part of geological time represented by rocks in which the evidence of life is slight and the life forms are primitive; pre-Phanerozoic
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. the Cryptozoic
    the Cryptozoic era
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of cryptozoic1

First recorded in 1890–95; crypto- + zo- + -ic

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