<B>SDI</B> (no periods) or <B>S.D.I.,</B><DL COMPACT><DD><B> 1. </B>Selective Dissemination of Information (a computerized system for data on published technical literature). <DD><B> 2. </B>Strategic Defense Initiative (a system of computer-controlled defense using lasers and nuclear ballistic missiles in space to intercept and destroy enemy missiles before they reach their targets). <BR> <I>Ex. Opponents point out that even if both nations had an SDI, the situation would be unstable because of the temptation for one nation to strike first (R. M. Lawrence).</I> </DL>
<A NAME="sdoc">
<B>S. Doc.,</B><DL COMPACT><DD> Senate document (used with a number). <BR> <I>Ex. S. Doc. 23764.</I> </DL>
<A NAME="sdr">
<B>S.D.R.</B> or <B>S.D.R.s,</B><DL COMPACT><DD> Special Drawing Rights. </DL>
<A NAME="sds">
<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> <B>=batfish.</B></DL>
<A NAME="seabeach">
<B>seabeach, </B>noun. <B>=seashore.</B></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>
<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> <B>=hardtack.</B></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>