| abiotrophy | (noun) a loss of vitality and a degeneration of cells and tissues not due to any apparent injury | - |
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| aerobiotic | (adjective) living or active only in the presence of oxygen | - |
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| amphibiotic | (adjective) having an aquatic early or larval form and a terrestrial adult form | Synonyms: semiaquatic |
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| anabiotic | (adjective) of or related to the state of anabiosis | - |
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| anaerobiotic | (adjective) living or active in the absence of free oxygen | Synonyms: anaerobic |
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| antibiotic | (adjective) of or relating to antibiotic drugs | - |
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| (noun) a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections | Synonyms: antibiotic drug |
| biota | (noun) all the plant and animal life of a particular region | Synonyms: biology |
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| biotech | (noun) the branch of molecular biology that studies the use of microorganisms to perform specific industrial processes | Synonyms: biotechnology |
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| biotechnology | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: bioengineering, ergonomics |
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| (noun) the branch of molecular biology that studies the use of microorganisms to perform specific industrial processes | Synonyms: biotech |
| bioterrorism | (noun) terrorism using the weapons of biological warfare | Synonyms: biological terrorism |
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| biotic | (adjective) of or relating to living organisms | - |
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| biotin | (noun) a B vitamin that aids in body growth | Synonyms: vitamin H |
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| biotite | (noun) dark brown to black mica found in igneous and metamorphic rock | - |
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| biotitic | (adjective) relating to or involving biotite | - |
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| biotype | (noun) organisms sharing a specified genotype or the genotype (or peculiarities) so shared | - |
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| biotypic | (adjective) of or relating to a biotype | - |
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| cryptobiotic | (adjective) of or related to the state of cryptobiosis | - |
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| macrobiotic | (adjective) of or relating to the theory or practice of macrobiotics | - |
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| macrobiotics | (noun) the theory of promoting health and longevity by means of diet (especially whole beans and grains) | - |
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| nonsymbiotic | (adjective) not parasitic on another organism | Synonyms: free-living, nonparasitic |
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| probiotic | (noun) a beneficial bacterium found in the intestinal tract of healthy mammals; often considered to be a plant | Synonyms: probiotic bacterium, probiotic flora, probiotic microflora |
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| (noun) A dietary supplement containing live bacteria, usually taken after a course of antibiotics to replenish the damaged gastrointestinal flora. | - |
| symbiotic | (adjective) used of organisms (especially of different species) living together but not necessarily in a relation beneficial to each | - |
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| symbiotically | (adverb) in a symbiotic manner | - |
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