Minimal lethal dose

minimal lethal dose n.

Abbr. MLD, mld The smallest quantity of a toxic substance or infectious agent that is found to be lethal.


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    [min-uh-muh l] /ˈmɪn ə məl/ adjective 1. constituting a : a minimal mode of transportation. 2. barely adequate or the least possible: minimal care. /ˈmɪnɪməl/ adjective 1. of the least possible; minimum or smallest adv. 1894, from minimal + -ly (2). adj. “smallest, least,” 1660s, from Latin minimus (see minim) + -al (1).

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