social distancing UK /ˈsəʊʃəl ˌdɪstən(t)sɪŋ/US /ˈsoʊʃəl ˌdɪstən(t)sɪŋ/ noun1 •The practice of maintaining physical distance between people to reduce the spread of communicable diseases by isolating those with such diseases in quarantines, maintaining space between individuals, and prohibiting certain activities.The Governor of an affected State implements isolation and/or social-distancing requirements using State/local legal authorities. — 2004