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#ThingDescriptionTopicForAgainstNet
1301SpitzDog typeBiology and health sciences000
1302SpleenImmune organ that filters bloodBiology and health sciences000
1303SpongeAnimals of the phylum PoriferaBiology and health sciences000
1304SporeUnit of reproduction adapted for dispersal and survival in unfavorable conditionsBiology and health sciences000
1305SporophyteDiploid multicellular stage in the life cycle of a plant or algaBiology and health sciences000
1306SpratCommon name for several kinds of forage fishBiology and health sciences000
1307SpringtailClass of arthropodsBiology and health sciences000
1308SpruceGenus of coniferous evergreen treesBiology and health sciences000
1309SquidSuperorder of cephalopod molluscsBiology and health sciences000
1310SquirrelFamily of rodentsBiology and health sciences000
1311Staphylococcus aureusSpecies of Gram-positive bacteriumBiology and health sciences000
1312StarchGlucose polymer used as energy store in plantsBiology and health sciences000
1313StarfishClass of echinoderms, marine animalBiology and health sciences000
1314StarlingFamily of birdsBiology and health sciences000
1315StegosaurusGenus of Late Jurassic armored dinosaurBiology and health sciences000
1316Stem cellUnspecialized biological cell that can become specializedBiology and health sciences000
1317Sterilization (medicine)Medical technique that intentionally leaves a person unable to reproduceBiology and health sciences000
1318SteroidPolycyclic organic compound having sterane as a core structureBiology and health sciences000
1319SticklebackFamily of ray-finned fishBiology and health sciences000
1320StimulantDrug that increases alertnessBiology and health sciences000
1321StingerSharp organ capable of injecting venomBiology and health sciences000
1322StingraySuborder of fishesBiology and health sciences000
1323StoatSpecies of mammalBiology and health sciences000
1324StomaIn plants, a variable pore between paired guard cellsBiology and health sciences000
1325StomachDigestive organBiology and health sciences000
1326StorkType of wading birdBiology and health sciences000
1327StramenopileClade of eukaryotesBiology and health sciences000
1328StrawberryEdible fruitBiology and health sciences000
1329StrepsirrhiniSuborder of primatesBiology and health sciences000
1330Stress (biology)Organism's response to a stressor such as an environmental condition or a stimulusBiology and health sciences000
1331StrokeDeath of a region of brain cells due to poor blood flowBiology and health sciences000
1332SturgeonRay-finned fishBiology and health sciences000
1333Substance dependenceNeed for a drug, whose discontinuation results in withdrawal symptomsBiology and health sciences000
1334Substance use disorderContinual use of drugs despite negative consequencesBiology and health sciences000
1335Sugar beetPlant grown commercially for sugar productionBiology and health sciences000
1336SugarcaneSeveral species of grass used for sugar productionBiology and health sciences000
1337SuicideIntentional act causing one's own deathBiology and health sciences000
1338SulidaeFamily of birdsBiology and health sciences000
1339SunbirdFamily of birdsBiology and health sciences000
1340SurgeryMedical procedures that involve incisive or invasive instruments into body cavitiesBiology and health sciences000
1341SustainabilitySocietal goal and normative conceptBiology and health sciences000
1342SwallowFamily of songbirdsBiology and health sciences000
1343Swallowtail butterflyButterflies of family PapilionidaeBiology and health sciences000
1344SwanTribe of large water birdsBiology and health sciences000
1345Sweet potatoSpecies of edible plantBiology and health sciences000
1346Swift (bird)Family of birdsBiology and health sciences000
1347SwordfishFish which has a long, pointed billBiology and health sciences000
1348SymbiogenesisEvolutionary theoryBiology and health sciences000
1349SymbiosisEcological interaction between taxaBiology and health sciences000
1350Symptomatic treatmentMedical treatment that only affects a condition's symptomsBiology and health sciences000

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Item list from Wikipedia Vital Articles (levels 1-4), refreshed daily at 06:00 UTC. Text & images CC BY-SA.