Because salinity (in concert with temperature) affects the density of seawater, it can play a role in its vertical stratification. Essentially, lower salinity water (= lower density) floats on top of higher salinity water (= higher density).
Alternative definition, a choice limited to one of two or more possibilities, as of things, propositions, or courses of action, the selection of which precludes any other possibility: You have the alternative of riding or walking. See more.
critical explanation or interpretation, esp. of Scripture. [1610â20; < Greek exá¸gÄsis an interpretation =exÄgÄ-, variant s. of exÄgeÃ®sthai to show the way, interpret] ex`eâ¢getâ²ic (-ËdÊÉt Éªk) ex`eâ¢getâ²iâ¢cal, adj. ex`eâ¢getâ²iâ¢calâ¢ly, adv.