Before the most recent or significant war in a culture's history. / Before the outbreak of World War I in 1914. / Before the outbreak of World War II in 1939.

A fertilized human egg, up to 14 days old, that can develop into an embryo; especially one to be implanted by IVF.

Acquired beforehand.

(engineering, architecture) Of a structural member, having stress already applied during the manufacturing process in the opposite direction to the stress expected in use.

Referring to a period before the mechanization of farming or some other human activity.

Partially or completely cooked in advance.

Any test done as practice, before an official test.

Alternative spelling of presymptomatic

Alternative spelling of preeminent

Alternative spelling of precancerous