adjective
US/ˌkrɔːsˈsek.ʃən.əl/
UK/ˌkrɒsˈsek.ʃən.əl/
studying many different people or things at one point in time, not over many years
In context
The team ran a cross-sectional survey of five hundred students to see how much sleep they get.
Short entry. Full notes coming.