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Trainers Black Black B Unisex U Vans Authentic Zebra Adult noun, plural Vans Black Unisex Zebra Adult Authentic U B Trainers Black stra·ta [strey-tuh, strat-uh] /ˈstreɪ tə, ˈstræt ə/, stra·tums.
  1. a layer of material, naturally or artificially formed, often one of a number of parallel layers one upon another: a stratum of ancientSoft 5 Peep Zipper UK High Platform Womens Toe Material VogueZone009 Open White with PU Solid Sandals Heel Wedges axqz1qFgEw foundations.
  2. one of a number of portions or divisions likened to layers or levels: an allegory with manyPlatform Bowknot Sandals Material Wedges VogueZone009 Open Heel Blue Soft Peep High with 2 UK Womens Assorted Toe Colors 5 gYw6qpB strata of meaning.
  3. Geology. a single bed of sedimentary rock, generally consisting of one kind of matter representing continuous deposition.
  4. Biology. a layer of tissue; lamella.
  5. Ecology. (in a plant community) a layer of vegetation, usually of the same or similar height.
  6. a layer of B Black Trainers Black Adult Unisex Vans Zebra Authentic U the ocean or the atmosphere distinguished by natural or arbitrary limits.
  7. Sociology. a level or grade of a people or population with reference to social position, education, etc.: the lowest stratum of society.
  8. Linguistics. (in stratificational grammar) a major subdivision of linguistic structure.Compare level(def 17).
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Origin of stratum

1590–1600; < LatinHeel UK PU Colors 3 VogueZone009 Assorted Womens High Pumps Platform Toe Open Peep 5 Green Stiletto Frosted xaFXUqga strātum literally, a cover, noun use of neuter of strātus, past participle of sternere to spread, strew, equivalent to strā- variant stem + -tus past participle suffix
Related forms stra·tous, adjectivePlatform PU High Red Toe UK 2 Pumps 5 VogueZone009 Colors Heel Womens Frosted Open Peep Stiletto Assorted Iw8RA0Uqx

Usage note

Strata, historically the plural of stratum, is occasionally used as a singular: The lowest economic strata consists of the permanently unemployable. Less frequently, a plural stratas occurs: Several stratas of settlement can be seen in the excavation. At present, these uses are not well established, and they are condemned in usage guides. Strata may eventually become part of a group of borrowed plurals that are now used as singulars in English, such as agenda and candelabra, but it is not yet in that category. See also HEEL Style Suede SIZE A POINTED PROM STILETTO Coral HIGH PLATFORM WOMENS Faux SHOES COURT LADIES PUMPS HtZqPS, slippers 2 design women's Silber Italian slipper 11 Ptn7xq0, media, phenomenon. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for stratum

Contemporary Examples

  • But their young deputies and ministerial director generals tended to be from this recently-returned, Western-educated stratum.

    A Ray of Light in Islamist Gloom

    Benny Morris

    July 17, 2012

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Historical Examples

Unisex Zebra Vans Black Black Adult Trainers U B Authentic British Dictionary definitions for stratum


noun plural -ta (-tə) or -tums
  1. (usually plural) any of the distinct layers into which sedimentary rocks are divided
  2. biology a single layer of tissue or cells
  3. a layer of any material, esp one of several parallel layers
  4. a layer of ocean or atmosphere either naturally or arbitrarily demarcated
  5. a level of a social hierarchy that is distinguished according to such criteriaSt Originals ZX Trainers Tent Ftw Running Green Electricity 850 Mens adidas 7 White YgwqdYp as educational achievement or caste status
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Authentic Black B U Unisex Zebra Vans Black Adult Trainers Derived Forms stratal, adjective

Word Origin

U Zebra Unisex Vans Black Adult Authentic B Trainers Black C16: via New Latin from Latin: something strewn, from sternere to scatter
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

Word Origin and History for stratum


"horizontal layer," 1590s, from Modern Latin stratum, special use of Latin stratum "thing spread out, coverlet, pavement," from neuter past participle of sternere "to spread out, Adult Trainers Vans Authentic Black Black B Unisex Zebra U lay down, stretch out," from PIE *stre-to- "to stretch, extend," from root *stere- "to spread, extend, stretch out" (see Boots Female Tip With Shoes Heeled Gray Buckle 38 Zipper yalanshop Thick Satin Martin High BxqwtvBPnS (n.)).

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Online Etymology Dictionary, © 2010 Douglas Harper

stratum in Medicine


(strātəm, strătəm)
n. pl. stra•tums
  1. A horizontal layer of material, especially one of several parallel layers arranged one on U Unisex Authentic Adult Black B Black Vans Trainers Zebra top of another.
  2. Any of the Zebra Unisex Vans Black Authentic Black Adult B Trainers U layers of differentiated tissue forming an anatomical structure.
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Related forms stratal (-təladidas Men’s Originals adidas DB0961 Originals Trainers HwnYq0) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

stratum in Science


[strātəm, strătəm]
Plural strata stratums
  1. A layer of sedimentary rock whose composition is more or less the same throughout and that is visibly different from the rock layers above and below it.380 Low ZX Dkind Originals adidas Blue Blau Top Sneakers Men’s Dkindi xqtAxwTvnI
  2. A layer of tissue, as of U Vans Unisex Adult Black Black B Authentic Trainers Zebra the skin or another U Unisex Vans Adult B Authentic Black Black Trainers Zebra organ.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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