Agency  for  Toxic  Substances  and  Disease  Registry.An  agency  in  the  U.S.  Department  of

Health and Human Services responsible for evaluating the impact on public health of the release

of  hazardous substances into  the  environment, for  maintaining  a  registry  of  contaminated  waste

sites,  and  for  conducting  research  on  the  effects  of  hazardous  substances  on  human  health.  —

Abbr. ATSDR. [Blacks Law 8th]