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stratum

stratum

1 8.1
A layer of material among other layers, for example in rock or soil
  • noun
  • /ˈstreɪtəm/
  • Specialized
translation icon : estrato
  • There is a vividly staining stratum granulosum rich in keratohyaline granules.
  • stratum corneum
  • stratum spinosum
  • stratum cells

And in the case of Lucy, in the same layer, the same stratum where we found her, we found fossilized crocodile and turtle eggs.

Examples

  • Within the stratum spinosum, individual cells have indistinct cytoplasmic boundaries without prominent cell membrane detail.

    Academic text (2001)
  • Archaeologists discovered a stratum of clay pottery that dated back several centuries.

  • How will our geological stratum be read or interpreted?

    Academic text (2018)
  • The first area (shallow stratum) is located in St. Andrew Sound.

    Academic text (1999)
  • And in the case of Lucy, in the same layer, the same stratum where we found her, we found fossilized crocodile and turtle eggs.

  • Fifty meters below the Anomaleum is a stratum of amniotic filters.

  • For example, in Borneo, hemi-epiphytic figs colonize hosts from a particular canopy stratum.

    Academic text (2005)
  • The geologist carefully examined each stratum to understand the history of the Earth's formation.

  • The thin stratum of sediment on the riverbed indicated a significant change in water flow.

Synonyms

layer
vsstratum
432 2.0

A thin sheet of material that covers a surface

is a single level among several stacked ones in materials
substrate
vsstratum
  • Specialized
6 7.9

A layer that lies under another layer, for example under soil or paint

is any single layer regardless of position, not only the one below
folium
vsstratum
  • Specialized
9.9

A thin layer within rocks changed by heat and pressure

is any single layer in many materials, not only thin rock

Compounds

stratum lucidum
  • Specialized
9.8

A thin, clear layer of skin in the palms and soles between outer and inner layers

stratum basale
  • Specialized
8.7

The deepest layer of the outer skin that makes new skin cells

stratum corneum
  • Specialized
8.1

The outer layer of skin made of dead cells that are shed

stratum elasticum
  • Specialized
8.9

A layer of elastic fibers in tissues like skin or blood vessels that helps them stretch and return to shape

stratum germinativum
  • Specialized
9.9

The deepest skin layer that makes new skin cells

stratum granulosum
  • Specialized
8.6

A thin layer of skin under the outer layer made of dying cells with visible granules

How Thick

formation
  • Specialized
57 6.3
bed
  • Specialized
128 5.2
stratum
  • Specialized
1 8.1
sheet
140 1.4
coating
35 3.4
film
191 3.2

Surface Forms

stratum singular
strata plural

Etymology

Stratum comes from Latin stratum, from sternere 'to spread'. In science it means a single layer of rock, soil, or tissue—like one layer in a pile—which explains the word's literal meaning.