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explicit or definite.
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(bioscience, taxonomy) pertaining to a species, as a taxon or taxa at the rank of species.
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(sometimes in combination) special, distinctive or unique.
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intended for, or applying to, a particular thing.
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Serving to identify a particular thing (often a disease or condition), with little risk of mistaking something else for it.
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being a remedy for a particular disease on a deeper level, rather than just masking the symptoms
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(immunology) limited to a particular antibody or antigen.
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(physics) of a value divided by mass (e.g. specific orbital energy)
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(physics) similarly referring to a value divided by any measure which acts to standardize it (e.g. thrust specific fuel consumption, referring to fuel consumption divided by thrust)
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(physics) a measure compared with a standard reference value by division, to produce a ratio without unit or dimension (e.g. specific refractive index is a pure number, and is relative to that of air)