Definition of biorational in English:
biorational
adjective
FarmingDesignating or relating to pest and weed control agents used because of their specific effects upon the organisms they are intended to control, rather than because of their toxicity or other general effects; employing or involving such agents.
Pronunciation
biorational
/ˌbʌɪə(ʊ)ˈraʃ(ə)n(ə)l/ /ˌbʌɪə(ʊ)ˈraʃən(ə)l/Origin
1970s.
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