| abiotic | <biology> Refers to nonliving objects, substances or processes. (06 May 1997) |
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| abiotic stress | <botany> Nonliving environmental factors (such as drought, extreme cold or heat, high winds) that can have harmful effects on plants. (06 May 1997) |
| abiotic transformation | <biochemistry> An abiotic transformation is any process in which a chemical in the environment is altered by non-biological mechanisms (such as by exposure to sunlight). (09 Oct 1997) |