Valuable; worth preserving; worth saving for later use.

A place used for storage of seeds as a source for planting in case seed reserves or biodiversity elsewhere are destroyed.

(architecture) A building structure created by an intersection of two or three vaults.

plural of ribbed vault

plural of barrel vault

(architecture) A simple roof having a curved, often semicircular cross section; used to span large distances in railway stations, churches, etc. Usually supported on columns.

(architecture) A vault whose ribs radiate to form patterns reminiscent of stars

(architecture) A vault resulting from the intersection of two barrel vaults crossing in a right angle. The angles of intersection are groins with projecting angles at the base, which die away at the summit.

plural of cross vault

(architecture) A vault resulting from the intersection of two barrel-vaults crossing in a right angle. Its thrusts are concentrated along the groins or arrises and eventually at the four corners