stratum

English

Etymology

From Latin strātum (“a spread for a bed, coverlet, quilt, blanket; a pillow, bolster; a bed”), neuter singular of strātus, perfect passive participle of sternō (“spread”).

Pronunciation

• IPA: /ˈstɹɑːtəm/
• IPA: /ˈstɹeɪtəm/

Noun

stratum (plural strata)

1. One of several parallel horizontal layers of material arranged one on top of another.
2. (geology) A layer of sedimentary rock having approximately the same composition throughout.
3. Any of the regions of the atmosphere, such as the stratosphere, that occur as layers.
4. (biology) A layer of tissue.
5. A class of society composed of people with similar social, cultural, or economic status.
6. (ecology) A layer of vegetation, usually of similar height.

Synonyms

• (layers of material arranged one on top of another): tier

Related terms

• stratification
• stratify
• stratosphere

Translations

one of several parallel horizontal layers of material arranged one on top of another

• Finnish: kerros (fi)
• French: couche (fr) f

• Japanese: 層 (ja) (そう, sō)
• Russian: слой (ru) (sloj) m 
• Swedish: skikt (sv) n, stratum (sv) n (scientific, pl. strata), varv (sv) n (seldom used; noun to vb. varva: "to layer", "to alternate")

layer of sedimentary rock having approximately the same composition throughout

• Catalan: estrat (ca) m
• Finnish: maakerros, kerrostuma
• French: strate (fr) f

• Japanese: 地層 (ja) (ちそう, chisō)
• Russian: слой (ru) (sloj) m 

any of the regions of the atmosphere

• French: couche (fr) f
• Japanese: 層 (ja) (そう, sō)

• Russian: слой (ru) (sloj) m 

layer of tissue

• Catalan: estrat (ca) m
• Finnish: ihokerros
• French: couche (fr) f, stratum (fr) m

• Japanese: 層 (ja) (そう, sō)
• Russian: слой (ru) (sloj) m 

class of society composed of people with similar social, cultural, or economic status

• Catalan: estrat (ca) m
• Finnish: yhteiskuntaluokka, kansankerros
• French: classe (fr) f, couche (fr) f

• Japanese: 階級 (ja) (かいきゅう, kaikyū)
• Russian: слой (ru) (sloj) m 
• Swedish: samhällsskikt (sv) n, klass (sv) c

layer of vegetation

• Catalan: estrat (ca) m

• Swedish: skikt (sv) n (used as a suffix, -skikt, to a determinative noun, e.g. fältskikt, trädskikt), vegetationsskikt (sv) n, växtskikt (sv) n

External links

• Stratum on Wikipedia.Wikipedia
• stratum in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• stratum in The Century Dictionary, The Century Co., New York, 1911

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Latin

Etymology

From strātus, perfect passive participle of sternō (“spread”).

Pronunciation

• (Classical) IPA: /ˈstraː.tum/

Noun

strātum (genitive strātī); n, second declension

1. a bed-covering, coverlet, quilt, blanket
2. a pillow, bolster
3. a bed, couch
4. a horse-blanket, saddle-cloth
5. a pavement
6. accusative singular of strātum
7. vocative singular of strātum

Inflection

Number	Singular	Plural
nominative	strātum	strāta
genitive	strātī	strātōrum
dative	strātō	strātīs
accusative	strātum	strāta
ablative	strātō	strātīs
vocative	strātum	strāta

Descendants

Albanian: shtrat English: stratum French: estrade Italian: strato

Portuguese: estrado Romanian: strat Spanish: estrado

Verb

strātum

1. supine of sternō