| ageratum | (noun) any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers | - |
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| (noun) rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium | Synonyms: Conoclinium coelestinum, Eupatorium coelestinum, mist-flower, mistflower |
| datum | (noun) an item of factual information derived from measurement or research | Synonyms: data point |
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| denotatum | (noun) an actual object referred to by a linguistic expression | - |
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| desideratum | (noun) something desired as a necessity | - |
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| designatum | (noun) something (whether existing or not) that is referred to by a linguistic expression | - |
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| erratum | (noun) a mistake in printed matter resulting from mechanical failures of some kind | Synonyms: literal, literal error, misprint, typo, typographical error |
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| paleostriatum | (noun) the inner pale yellow part of the lenticular nucleus | Synonyms: globus pallidus, pallidum |
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| petrolatum | (noun) a semisolid mixture of hydrocarbons obtained from petroleum; used in medicinal ointments and for lubrication | Synonyms: mineral jelly, petroleum jelly |
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| pomatum | (noun) hairdressing consisting of a perfumed oil or ointment | Synonyms: pomade |
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| relatum | (noun) a term in a proposition that is related to the referent of the proposition | - |
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| stratum | (noun) an abstract place usually conceived as having depth | Synonyms: layer, level |
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| (noun) a subpopulation divided into a stratified sampling | - |
| (noun) people having the same social, economic, or educational status | Synonyms: class, social class, socio-economic class |
| (noun) one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock) | - |
| striatum | (noun) a striped mass of white and grey matter located in front of the thalamus in each cerebral hemisphere; consists of the caudate nucleus and the lenticular nucleus | Synonyms: corpus striatum, striate body |
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| substratum | (noun) an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population | Synonyms: substrate |
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| (noun) any stratum or layer lying underneath another | Synonyms: substrate |
| (noun) a surface on which an organism grows or is attached | Synonyms: substrate |
| superstratum | (noun) the language of a later invading people that is imposed on an indigenous population and contributes features to their language | Synonyms: superstrate |
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| (noun) any stratum or layer superimposed on another | Synonyms: superstrate |
| ultimatum | (noun) a final peremptory demand | - |
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