<B>SDS</B> (no periods) or <B>S.D.S.,</B><DL COMPACT><DD> Students for a Democratic Society (any one of several political organizations of radical college students, especially an American national organization formed in 1962. </DL>
<A NAME="sdump">
<B>S-dump, </B>noun.<DL COMPACT><DD> a chute curved or bent resembling the letter S. </DL>
<B>Se</B> (no periods),<DL COMPACT><DD> selenium (chemical element). </DL>
<A NAME="se">
<B>SE</B> (no periods) or <B>S.E.,</B><DL COMPACT><DD> an abbreviation for the following: <DD><B> 1. </B>southeast. <DD><B> 2. </B>southeastern. <DD><B> 3. </B>(Football.) split end. <DD><B> 4. </B>Stock Exchange. <DD><B> 5. </B>systems engineer. </DL>
<A NAME="sea">
<B>sea, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> <B>1. </B>the great body of salt water that covers almost three fourths of the earth's surface; the ocean. <DD><B> 2. </B>any large body of salt water, smaller than an ocean, partly or wholly enclosed by land. <BR> <I>Ex. the North Sea, the Mediterranean Sea, the Dead Sea. The seas that surround Antarctica are notably stormy (Paul A. Siple).</I> <DD><B> 3. </B>a large lake of fresh water. <BR> <I>Ex. the Sea of Galilee.</I> <DD><B> 4a. </B>a large, heavy wave. <BR> <I>Ex. A high sea swept over the ship's deck.</I> <DD><B> b. </B>the swell of the ocean. <BR> <I>Ex. a heavy sea. Some ship in distress, that cannot live in such an angry sea (Longfellow).</I> <DD><B> 5. </B>(Figurative.) an overwhelming amount or number. <BR> <I>Ex. a sea of troubles.</I> <DD><B> 6. </B>(Figurative.) a broad expanse. <BR> <I>Ex. a sea of faces.</I> <DD><B> 7. </B>Often, <B>Sea.</B> one of the dark, flat plains on the moon once thought to be seas; mare. <BR> <I>Ex. the Sea of Tranquility. The dark markings which are called "seas," even though they are entirely dry, make up the surface of the "man in the moon" (Science News Letter).</I> <DD><I>adj. </I> of, on, or from the sea; marine. <BR> <I>Ex. a sea animal, a sea route, a sea breeze.</I> <BR><I>expr. <B>at sea,</B> <DD><B> a. </B>out on the sea; on shipboard. </I> <I>Ex. We were at sea out of sight of land for ten days.</I> <DD><B> b. </B>(Figurative.) puzzled; confused. <BR> <I>Ex. I can't understand this problem; I'm all at sea.</I> <DD><B> c. </B>(Figurative.) in error; astray; quite wrong. <BR> <I>Ex. You're altogether at sea in your guesses.</I> <BR><I>expr. <B>follow the sea,</B> </I>to be a sailor. <BR> <I>Ex. As a boy, Columbus dreamed of following the sea.</I> <BR><I>expr. <B>go to sea,</B> <DD><B> a. </B>to become a sailor. </I> <I>Ex. The captain had gone to sea when he was barely seventeen.</I> <DD><B> b. </B>to begin a sea voyage. <BR> <I>Ex. The family went to sea last month.</I> <BR><I>expr. <B>put to sea,</B> </I>to begin a sea voyage. <BR> <I>Ex. Our fleet put to sea from Boston.</I> <BR><I>expr. <B>take to sea,</B> </I>to start a voyage; embark. <BR> <I>Ex. The ships of the Spanish Armada took to sea in 1588.</I> </DL>
<A NAME="seaanchor">
<B>sea anchor,</B><DL COMPACT><DD><B> 1. </B>a drag used in a gale to prevent a ship from drifting and to keep its head to the wind. It usually consists of a floating framed cone of canvas with its large, open base toward the ship. <DD><B> 2. </B>any one of various somewhat similar devices by which a seaplane or amphibious aircraft may be held more or less stationary with its hull pointed into the wind, used especially after a forced landing at sea. </DL>
<A NAME="seaanemone">
<B>sea anemone,</B><DL COMPACT><DD> a flowerlike polyp with a fleshy, cylindrical body and a mouth surrounded by many brightly colored tentacles. There are numerous kinds. </DL>
<A NAME="seaarrow">
<B>sea arrow,</B><DL COMPACT><DD> any one of various fast-swimming squids that dart in the water to catch fish. </DL>
<A NAME="seabag">
<B>sea bag,</B><DL COMPACT><DD> a large canvas bag that seamen use to carry clothing and other articles to and from a ship. </DL>
<A NAME="seabass">
<B>sea bass,</B><DL COMPACT><DD><B> 1. </B>a common food and game fish of the northeastern coast of the United States with a peculiar tail fin. <DD><B> 2. </B>any one of various similar fishes. </DL>
<A NAME="seabat">
<B>sea bat,</B> =batfish.</DL>
<A NAME="seabeach">
<B>seabeach, </B>noun. =seashore.</DL>
<A NAME="seabean">
<B>sea bean,</B><DL COMPACT><DD><B> 1. </B>the large, hard, beanlike edible seed of a tropical, leguminous climbing plant often carried by ocean currents to distant shores. <DD><B> 2. </B>the plant producing this seed. <DD><B> 3. </B>any one of various small univalve shells somewhat resembling coffee beans. </DL>
<A NAME="seabear">
<B>sea bear,</B><DL COMPACT><DD><B> 1. </B><B>=polar bear.</B> <DD><B> 2. </B>any one of various fur seals, especially the northern fur seal. </DL>
<A NAME="seabed">
<B>seabed, </B>noun.<DL COMPACT><DD> the bottom of the sea; ocean bed; sea-bottom. </DL>
<A NAME="seabee">
<B>Seabee, </B>noun.<DL COMPACT><DD> a member of the construction battalion of the United States Navy, composed of mechanics, carpenters, welders, and other construction personnel, who normally take no part in combat. </DL>
<A NAME="seabeef">
<B>sea beef,</B><DL COMPACT><DD> the flesh of the porpoise or the whale. </DL>
<A NAME="seabird">
<B>sea bird,</B><DL COMPACT><DD> any bird that lives on or near the sea. The petrels, gannets, and jaegers are sea birds. (SYN) seafowl. </DL>
<A NAME="seabiscuit">
<B>sea biscuit,</B><DL COMPACT><DD> a hard biscuit prepared for long keeping; hardtack; ship biscuit. </DL>
<A NAME="seabladder">
<B>sea bladder,</B> =Portuguese man-of-war.</DL>
<A NAME="seaboard">
<B>seaboard, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> land near the sea; seacoast; seashore. <BR> <I>Ex. New York City is on the Atlantic seaboard.</I> <DD><I>adj. </I> bordering on the sea. </DL>
<A NAME="seaboat">
<B>sea boat,</B><DL COMPACT><DD> a vessel considered with reference to her behavior at sea. </DL>
<A NAME="seaboots">
<B>sea boots,</B><DL COMPACT><DD> high, waterproof boots for use at sea. </DL>
<A NAME="seaborn">
<B>seaborn, </B>adjective.<DL COMPACT><DD><B> 1. </B>born in or of the sea. <DD><B> 2. </B>produced in or by the sea. </DL>
<A NAME="seaborne">
<B>seaborne, </B>adjective.<DL COMPACT><DD><B> 1. </B>conveyed by sea; carried on the sea. <BR> <I>Ex. Authorities reported today that tens of thousands of penguins were dying on islands off the Cape coast because their feathers were clogged with seaborne oil (New York Times).</I> <DD><B> 2. </B>carried or floating on the sea. <BR> <I>Ex. a seaborne ship.</I> </DL>
<A NAME="seabottom">
<B>sea-bottom, </B>noun.<DL COMPACT><DD> the bottom or lowest depth of the sea. </DL>
<A NAME="seabound">
<B>seabound, </B>adjective.<DL COMPACT><DD><B> 1. </B>bounded by the sea. <BR> <I>Ex. a seabound castle.</I> <DD><B> 2. </B>bound for the sea; on the way to the sea or seashore. <BR> <I>Ex. a seabound train, a seabound voyage.</I> </DL>
<A NAME="seabread">
<B>sea bread,</B> =hardtack.</DL>
<A NAME="seabream">
<B>sea bream,</B><DL COMPACT><DD><B> 1. </B>any one of certain edible marine fishes belonging to the same family as the porgies, especially a common European species. <DD><B> 2. </B>any fish belonging to this family. </DL>
<A NAME="seabreeze">
<B>sea breeze,</B><DL COMPACT><DD> a breeze blowing from the sea toward the land. <BR> <I>Ex. Late every afternoon, practically the year round, a stiff sea breeze blows in from the Pacific, carrying with it on many days fog heavy enough to require windshield wipers and headlights (Harper's).</I> </DL>
<A NAME="seabuckthorn">
<B>sea buckthorn,</B><DL COMPACT><DD> a thorny shrub growing on the coasts and Alpine rivers of Europe, having silvery leaves and abundant orange or yellow berries with an acid flavor. </DL>
<A NAME="seac">
<B>SEAC</B> (no periods),<DL COMPACT><DD> Standard Eastern Automatic Computer (a high-speed, electronic computing machine used by the National Bureau of Standards). </DL>
<A NAME="seacalf">
<B>sea calf,</B><DL COMPACT><DD> the common hair seal of the North American coasts; harbor seal. </DL>
<A NAME="seacanary">
<B>sea canary,</B><DL COMPACT><DD> the beluga whale, in reference to the trilling sound it makes. </DL>
<A NAME="seacaptain">
<B>sea captain,</B><DL COMPACT><DD> the master (captain) of a seagoing vessel, especially a merchant vessel; man whose profession is to command at sea. </DL>
<A NAME="seacave">
<B>sea cave,</B><DL COMPACT><DD> a cave formed by the action of waves against a rocky shore. </DL>
<A NAME="seachange">
<B>sea change,</B><DL COMPACT><DD><B> 1. </B>a change brought about by the sea. <BR> <I>Ex. Nothing of him that doth fade but doth suffer a sea change into something rich and strange (Shakespeare).</I> <DD><B> 2. </B>(Figurative.) any radical or complete change; transformation. <BR> <I>Ex. In its transition to the screen ... Shaw's novel ... has undergone quite a sea change (New Yorker).</I> </DL>
<A NAME="seachange">
<B>sea-change, </B>intransitive verb, <B>-changed,</B> <B>-changing.</B><DL COMPACT><DD> to undergo a sea change; be completely transformed. <BR> <I>Ex. ... living bones that had sea-changed into pearls and coral (Hannah Arendt).</I> </DL>
<A NAME="seachest">
<B>sea chest,</B><DL COMPACT><DD><B> 1. </B>a seaman's chest or box for his clothing and other belongings. <DD><B> 2. </B><B>=seacock.</B> </DL>
<A NAME="seacliff">
<B>sea cliff,</B><DL COMPACT><DD> a cliff facing the sea, usually formed by the erosive action of waves at its base. </DL>
<A NAME="seacoal">
<B>sea coal,</B><DL COMPACT><DD> (British Archaic.) coal dug from the earth and formerly carried to London by sea, as distinguished from charcoal. </DL>
<A NAME="seacoast">
<B>seacoast, </B>noun.<DL COMPACT><DD> the land along the sea; coast. <BR> <I>Ex. the seacoast of North America.</I> </DL>
<A NAME="seacock">
<B>seacock, </B>noun.<DL COMPACT><DD><B> 1. </B>(in a marine steam engine) a cock or valve in the injection water pipe which passes from the sea to the condenser. It is supplementary to the ordinary cock at the condenser and is intended to serve in case this should be damaged. <DD><B> 2. </B>any cock or valve forming a connecting passage from a ship's hull to the sea. <BR> <I>Ex. Tuckfield opened a seacock, and the forward escape hatch began to fill with water (Time).</I> </DL>
<A NAME="seacopter">
<B>seacopter, </B>noun.<DL COMPACT><DD> a helicopter with a floating hull, that can operate from land or water. </DL>
<A NAME="seacow">
<B>sea cow,</B><DL COMPACT><DD><B> 1. </B>any one of several large, fishlike, plant-eating mammals living in the sea. The manatee and dugong are two kinds of sea cow. <DD><B> 2. </B><B>=walrus.</B> <DD><B> 3. </B>(Obsolete.) a hippopotamus. </DL>
