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a. A fine-grained, firm earthy material that is plastic when wet and hardens when heated, consisting primarily of hydrated silicates of aluminum and widely used in making bricks, tiles, and pottery.
b. A hardening or nonhardening material having a consistency similar to clay and used for modeling.
2. Geology A sedimentary material with grains smaller than 0.002 millimeter in diameter.
3. Moist sticky earth; mud.
4. The human body as opposed to the spirit.

[Middle English clei, from Old English clæg.]

clay′ey (klā′ē), clay′ish adj.
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References in periodicals archive ?
It is situated on the Ewekoro Formation and the soil is lateritic clayish.
To reach it, the townfolk had to clamber up 10 meters of clayish soil and limestone boulders, many of them carrying clothes, food, portable radio units and battery-operated flashlights.
Latosolic soils are suitable for banana production to be well-drained, deep (over 100 cm), medium texture to clayish, well-structured, permeable, fertile, neutral to slightly acidic pH, no risk of flooding and salinity free (SALOMAO; SIQUEIRA, 2015).
South of Ilgin, where the potential for settlement is relatively low, gravel and clayish alluvium are found together with sandy alluvium.
In-between alluvium gravel and clayish sand a layer of gyttja containing wood and charcoal has been documented for borehole No 3043 (Table 1; Fig.
In his presentation, Georgi classified the analysed mineral as clayish black-tar shale (Terra bituminosa argillacea fissilis).
At the south corner, beside the stone, a different kind of sand was attested: darker, more compacted and with clayish texture, which was labelled as SU 703.
Citriculture in Sao Paulo State, Brazil, is concentrated in regions of low fertility soils, as stated by DEMATTE & VITTI (1992), who detected medium-textured soils (clay content of 15%-35% at the soil surface) for 65% of the evaluated areas; sandy soils (clay content of up to 15%) for 30%, and clayish soils for approximately 5%.
Our soil here in southeastern Wisconsin is clayish and bakes to almost concrete when dry.
One [soil] is very clayish; one is less clayish," he explains.
According to the Japan Times, a research team led by the University of Tokyo has concluded that cesium-137 gets easily absorbed in clayish soil and concentrates in seabed depressions.