n 1 : the place or environment where a plant or animal naturally occurs <the human pubic region is the natural of the crab louse> 2 : a housing for a controlled physical environment in which people can live surrounded by inhospitable conditions (as under the sea) .
of the crab louse> 2 : a housing for a controlled physical environment in which people can live surrounded by inhospitable conditions (as under the sea) .
