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platy1

[pley-tee] /ˈpleɪ ti/
adjective, platier, platiest.
1.
(of an igneous rock) split into thin, flat sheets, often resembling strata, as a result of uneven cooling.
Origin of platy1
1525-1535
1525-35; plate1 + -y1

platy2

[plat-ee] /ˈplæt i/
noun, plural (especially collectively) platy (especially referring to two or more kinds or species) platys, platies.
1.
Origin
1930-35; by shortening of New Latin Platypoecilus genus name, equivalent to platy- platy- + -poecilus < Greek poikílos mottled

platy-

1.
a combining form meaning “flat,” “broad,” used in the formation of compound words:
platyhelminth.
Also, plat-.
Origin
combining form representing Greek platýs; see flat1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for platy
Historical Examples
  • Strawberry Falls mark the front of a glacial step over a massive flow of platy andesite.

  • The platy parting is the more common, but the columnar or prismatic parting is well exhibited at several localities.

    Mount Rainier Various
British Dictionary definitions for platy

platy1

/ˈpleɪtɪ/
adjective platier, platiest
1.
of, relating to, or designating rocks the constituents of which occur in flaky layers: platy fracture
Word Origin
C19: from plate + -y1

platy2

/ˈplætɪ/
noun (pl) platy, platys, platies
1.
any of various small brightly coloured freshwater cyprinodont fishes of the Central American genus Xiphophorus, esp X. maculatus
Word Origin
C20: shortened from New Latin Platypoecilus former genus name, from platy- + -poecilus, from Greek poikilos spotted

platy-

combining form
1.
indicating something flat: platyhelminth
Word Origin
from Greek platus flat
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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platy in Medicine

platy- pref.
Flat: platyhelminth.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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10
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