A previous notion; a preconception, a presumption.
Early 17th century; earliest use found in Martin Fotherby (c1560–1620), bishop of Salisbury. From classical Latin praeceptiōn-, praeceptiō preconception, instruction, precept, right of receiving a legacy in advance from praecept-, past participial stem of praecipere + -iō. Compare French préception command, precept. Compare earlier perception, conception.