She felt her 'biological clock' ticking away and wanted to have a baby as soon as possible.
an adopted child who finally found her 'biological' mother
She practices 'biological control' in her gardening.
(..) the last remaining obstacle In other words, the unorthodox tendencies towards ownlife, which threaten the natural erosion of the family unit, will no longer have the biological support of the organism. As we all know, the stimulation of the family leads to private reflection outside Party needs (..)1984 1984