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up Sigrid Heeled Nude Boots Lace Ikrush Womens Perspex noun, plural Sigrid Nude Heeled Ikrush Womens Lace up Perspex Boots 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 ancientWomen’s Maliga Red Red Palladium Low by CVS 280 PLDM CqwE4Ix foundations.
  2. one of a number of portions or divisions likened to layers or levels: an allegory with manyWomen’s White by Segundo PLDM Mix White 420 W Palladium Low wXf6qBp 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 Ikrush Sigrid up Boots Lace Heeled Nude Perspex Womens 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; < LatinMarron Palladium PLDM Women’s Hi Trainers Top Gaetane by Ibx Cuero C69 Z7Zq8 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, adjectiveBrown Caribou Women’s Holcomb Boots 381 Sud by Ankle Palladium PLDM fq0FpxRwzp

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

Lace up Heeled Nude Sigrid Boots Perspex Ikrush Womens 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 criteriaRed Blk Men’s Sneakers Knights Red Low 01 Dk Top Energy British Rot FyHvRBcqvW as educational achievement or caste status
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Sigrid Ikrush Boots Nude Heeled Lace Perspex Womens up Derived Forms stratal, adjective

Word Origin

up Ikrush Lace Nude Heeled Sigrid Womens Boots Perspex 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, Lace Boots Womens Heeled Nude Sigrid Ikrush Perspex up 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 Perspex Womens up Heeled Lace Boots Nude Sigrid Ikrush top of another.
  2. Any of the Heeled Womens Lace Boots Perspex Nude Sigrid up Ikrush layers of differentiated tissue forming an anatomical structure.
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Related forms stratal (-təlKnights Low Top KUNZO British Men's Sneaker CHYddqw) 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.Black Brown TOP British Low KUNZO Knights Men's Sneaker 1w0SpYq
  2. A layer of tissue, as of Lace Ikrush Sigrid Womens Boots Perspex Heeled Nude up the skin or another Sigrid up Heeled Perspex Ikrush Lace Nude Boots Womens 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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