n. 1 layer, level, stratification, table, vein, seam; plane These coal strata have been mined for hundreds of years 2 level, caste, class, rank, station, standing, status, bracket, group, estate She married someone from a higher stratum of society
STRATUM
Meaning of STRATUM in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012