English: Census
Welsh: Y Cyfrifiad
Subject: Y cyfrifiad
Welsh definition: An official count of a population for demographic, social, or economic purposes. In the UK, population censuses have been held every ten years since 1801 and since 1966 supplementary censuses have been held halfway through the ten-year periods.
Welsh context: Maent yn profi cwestiynau newydd ar hunaniaeth rywiol ac yn gwirfoddoli gyda golwg ar eu cynnwys yn y Cyfrifiad am y tro cyntaf.