MAXIMUM ALLOWABLE CONCENTRATIONS
\mˈaksɪməm ɐlˈa͡ʊəbə͡l kˌɒnsəntɹˈe͡ɪʃənz], \mˈaksɪməm ɐlˈaʊəbəl kˌɒnsəntɹˈeɪʃənz], \m_ˈa_k_s_ɪ_m_ə_m ɐ_l_ˈaʊ_ə_b_əl k_ˌɒ_n_s_ə_n_t_ɹ_ˈeɪ_ʃ_ə_n_z]\
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The maximum exposure to a biologically active physical or chemical agent that is allowed during an 8-hour period (a workday) in a population of workers, or during a 24-hour period in the general population, which does not appear to cause appreciable harm, whether immediate or delayed for any period, in the target population. (From Lewis Dictionary of Toxicology, 1st ed)
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