(education, US and Canada) An educational institution (usually a college or university) which is attended after graduation from secondary school or high school.

plural of postsecondary school

plural of postscriptum

After or beyond sects or sectarianism, especially as a reaction to sectarianism.

(rare) An adherent of postsectarian philosophy.

Following selection.

Following a seismic event.

Occurring after a screening process.

Happening after saturation

Occurring after scarlet fever.