What does the word „DESANT“ mean?

What does the word „DESANT“ mean? This is a marine landing. What does landing mean? This is a military invasion conducted by sea. The next few pictures are a perfect example.

A Churchill tank leaves a tank landing craft (TLC 121) during a combined operations exercise at Thorness Bay on the Isle of Wight, 27 May 1942. H 20182 Part of WAR OFFICE SECOND WORLD WAR OFFICIAL COLLECTION Lockeyear W T (Lt) War Office official photographer
030322-N-1050K-010 Camp Patriot, Kuwait (Mar. 22, 2003) – Marines wade from a Landing Craft Utility vessel onto the dry land of Camp Patriot upon their return from a line security mission with other Marines and U.S. Navy Special Forces. Fifty Fast Team members returned after reinforcing the security at two of Iraq’s largest gulf oil terminals at the Mina Al Bakr and Khor Al Amaya oil terminals, located in the Northern Arabian Gulf. U.S. Navy photo by Journalist 1st Class Joseph Krypel.
030226-N-5362A-008 – CAMP PATRIOT, KUWAIT (February 26, 2003) – – Members of the British Royal Marines come ashore on Tijuana Beach at Camp Patriot, Kuwait from a Landing Craft Unit (LCU) from the Royal Navy. Members of the 3rd Surgical Group from the 3rd Commando Brigade are landing at Tijuana Beach to help support Operation Enduring Freedom. U.S. Navy photo by Photographer’s Mate 1st Class Arlo K. Abrahamson. Photograph cleared for release by JO1 Joseph Krypel, Commander, Maritime Propositioning Force PAO.