(1):

(n.) Position as to points of compass, or to influences of climate, etc.

(2):

(n.) The act of exposing or laying open, setting forth, laying bare of protection, depriving of care or concealment, or setting out to reprobation or contempt.

(3):

(n.) The exposing of a sensitized plate to the action of light.

(4):

(n.) The state of being exposed or laid open or bare; openness to danger; accessibility to anything that may affect, especially detrimentally; as, exposure to observation, to cold, to inconvenience.