osmosis. 1. Movement of water through a selectively permeable membrane, e.g. a cell membrane. 2. The movement of solvent molecules through a semipermeable membrane from a dilute solution to a more concentrated solution. 3. Diffusion of a fluid (e.g., water) through a semipermeable membrane.
The Declaration Of Independence was signed in Philadelphia in 1776.
Delegates sign Declaration of Independence. On this day in 1776, members of Congress affix their signatures to an enlarged copy of the Declaration of Independence. Fifty-six congressional delegates in total signed the document, including some who were not present at the vote approving the declaration.