Showing 2,701 to 2,800 of 3,132.
- SORUSAny reproductive structure, in some lichens and fungi, that produces spores.
- SPADIXA fleshy spike (inflorescence) with reduced flowers, usually enclosed by a spathe, characteristic of aroids.
- SPADOSomeone who has been castrated; a eunuch or castrato.
- SPAGHETTIA type of pasta made in the shape of long thin strings.
- SPAGYRICPertaining to alchemy; alchemical, especially regarding medicine.
- SPATHAA type of straight sword originating from the first-century Roman Empire. It was worn typically by cavalry officers and is a long version of the left shaped gladius.
- SPATHEA large bract that envelops or subtends a whole inflorescence, typically a spadix.
- SPATHICHaving good cleavage.
- SPATULAA kitchen utensil consisting of a flat surface attached to a long handle, used for turning, lifting, or stirring food.
- SPELEOTHEMAny secondary mineral, deposited in a natural cave by the action of water. Includes formations such as stalactites, stalagmites, flowstones, and helictites.
- SPELUNKA cave, cavern or grotto.
- SPERMThe reproductive cell or gamete of the male; a spermatozoon.
- SPERMATICOf, pertaining to, or resembling sperm.
- SPHAGNUMAny of various widely distributed mosses, of genus Sphagnum, which slowly decompose to form peat.
- SPHALERITEA yellow, brown or black, sometimes red, green white or colorless mineral with cubic crystals, of a chemical formula (Zn,Fe)S, often containing also minor metals, such as cadmium,
- SPHENEtitanite
- SPHENICShaped like a wedge.
- SPHENOIDHaving a wedge shape.
- SPHEREA surface in three dimensions consisting of all points equidistant from a center. .
- SPHERICALShaped as a sphere; being a sphere.
- SPHINCTERA ringlike band of muscle that surrounds a bodily opening (such as the anus or the openings of the stomach), constricting and relaxing as required for normal physiological function
- SPHYGMICOf or pertaining to the circulatory pulse.
- SPIRALA curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point.
- SPIREAAny of the many flowering shrubs of the genus Spiraea, that have clusters of white or pink flowers.
- SPIREMEThe tangled mass of strands of chromatin seen in the early stages of mitosis, originally believed to be a single continuous strand (or two in a diploid cell, etc.)
- SPLEENIn vertebrates, including humans, a ductless vascular gland, located in the upper left abdomen near the stomach, which destroys old red blood cells, removes debris from the bloodst
- SPLENECTOMYThe surgical removal of the spleen.
- SPLENICOf, related to, or located near the spleen.
- SPLENIUMThe thick posterior part of the corpus callosum of the brain.
- SPODOMANCYDivination by means of ashes.
- SPODUMENEThe mineral lithium aluminium inosilicate (LiAl(SiO3)2), a pyroxene and ore of lithium, sometimes regarded as a gemstone, which may be greenish, yellowish or pinkish in appearance.
- SPONDAICHaving or relating to spondees.
- SPONDEEA word or metrical foot of two syllables, either both long or both stressed.
- SPONGEAny of various marine invertebrates of the phylum Porifera, that have a porous skeleton often of silica.
- SPONGIFORMLike a sponge, porous, full of holes.
- SPORADIC(of diseases) occurring in isolated instances; not epidemic.
- SPORANGIUMA case, capsule, or container in which spores are produced by an organism.
- SPOREA reproductive particle, usually a single cell, released by a fungus, alga, or plant that may germinate into another.
- SPORIDIUMA secondary spore borne on a promycelium, or a filament produced from a spore, in certain kinds of minute fungi.
- STACTEOne of the sweet spices used by the Jews in Biblical times for preparing incense; it is thought to have been an oil or other form of myrrh or cinnamon, or a kind of storax.
- STADESynonym of stadion (“former Greek unit of distance”).
- STAMENIn flowering plants, a male reproductive structure in a flower that produces pollen, typically consisting of an anther and a filament.
- STAMINODEAn abortive stamen, or any organ modified from an abortive stamen; a staminodium
- STAPHYLOMAAn abnormal protrusion of the uveal tissue through the eyeball.
- STATICUnchanging; that cannot or does not change.
- STATICEPlants of the genus Limonium having spikes of white or mauve flowers.
- STEARINSolid fat.
- STEATITESoapstone. .
- STEGANOPODAny of the Steganopodes, a former suborder of birds having four toes webbed together.
- STEGODONAny member of the extinct genus †Stegodon, related to modern elephants; a stegodont.
- STELAAn obelisk or upright stone pillar, usually as a primitive commemoration or gravestone.
- STELAIplural of stele
- STELEAn upright (or formerly upright) slab containing engraved or painted decorations or inscriptions; a stela.
- STENTORA person with a powerful or stentorian voice.
- STEPHANEAn Ancient Greek headdress like a coronet.
- STEREA measure of volume used e.g. for cut wood, equal to one cubic metre.
- STEREOA system of recording or reproducing sound that uses two or more channels, each playing a portion of the original sound at different locations in order to simulate the separation o
- STERIGMAA slim projecting part of the basidium of some species of fungi that carries the basidiospore.
- STERILEUnable to reproduce (or procreate).
- STEWA cooking-dish used for boiling; a cauldron.
- STHENICCharacterized by nervous energy; robust, strong.
- STIBNITEA grey mineral, Sb2S3, that is the main ore of antimony; in powdered form, used as the cosmetic called kohl.
- STICHA verse, of whatever measure or number of feet, especially a verse of Scripture.
- STICHERONA hymn, often written in cycles and sung in alternation with psalm verses, used in the Orthodox Church and those Eastern Catholic Churches which follow the Byzantine Rite.
- STICHOSA line of ordinary length in a manuscript.
- STIFLETo make (an animal or person) unconscious or cause (an animal or person) to die by preventing breathing; to smother, to suffocate.
- STIGMAAn indication of infamy or disgrace. A permanent identity mark branded, cut or tattooed onto the skin, typically given to slaves, criminals and traitors. A negative and often unfai
- STILBa unit of luminance equal to one candela per square centimetre
- STILBENEEither of two isomeric hydrocarbons, diphenylethylene, but especially the trans isomer, used in the manufacture of dyes and many other compounds.
- STILBITEA tectosilicate zeolite mineral consisting of hydrated calcium aluminium silicate, common in volcanic rocks.
- STOAIn Ancient Greece, a walkway with a roof supported by colonnades, often with a wall on one side; specifically, the Great Hall in Athens.
- STOICProponent of stoicism, a school of thought, from in 300 B.C.E. up to about the time of Marcus Aurelius, who holds that by cultivating an understanding of the logos, or natural law,
- STOICHIOMETRYThe study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
- STOMAOne of the tiny pores in the epidermis of a leaf or stem through which gases and water vapor pass.
- STOMACHAn organ in animals that stores food in the process of digestion.
- STORAXAny member of the genus Styrax of about 130 species of large shrubs or small trees, mostly native to temperate or tropical regions of the Northern Hemisphere.
- STOREYA floor or level of a building or ship.
- STORYAn account of real or fictional events.
- STOVEA heater, a closed apparatus to burn fuel for the warming of a room.
- STRANGLETo kill someone by squeezing the throat so as to cut off the oxygen supply.
- STRATEGICOf or pertaining to strategy.
- STRATEGYThe science and art of military command as applied to the overall planning and conduct of warfare.
- STROBILAA jointed series of segments of an organism, as of the body of a tapeworm, posterior to the unjointed collum.
- STROBILEA scaly multiple fruit resulting from the ripening of an ament in certain plants, such as the hop or pine.
- STROBILUSA cone-shaped fruiting body sensu stricto of gymnosperms and vascular plants other than angiosperms, bearing either seeds or spores, but sensu lato may refer to similarly structure
- STROMAThe tissue structure of an organ, etc., that serves to support it.
- STROMATOLITEA laminated, columnar, rock-like structure constituting a large share of all fossils from 3.5 to 0.5 billion years ago, with some still being formed at present, some or all of whic
- STRONGYLEA nematode worm of the family Strongylidae, often parasitic in the gastrointestinal tract of mammals, especially horses
- STROPHEA turn in verse, as from one metrical foot to another, or from one side of a chorus to the other.
- STROPHIOLEAn excrescence or tubercle around the hilum of certain seeds.
- STYGIANAlternative form of Stygian (“of or relating to the river Styx”).
- STYLITEA Christian ascetic in ancient times who lived alone on top of a tall pillar.
- STYLOIDResembling a stylus or pen.
- STYLUSAn ancient writing implement consisting of a small rod with a pointed end for scratching letters on clay, wax-covered tablets or other surfaces, and a blunt end for obliterating th
- STYPTICBringing about contraction of tissues; harsh, raw, austere.
- SUBJECTLikely to be affected by or to experience something; liable.
- SUBLUXATIONA partial dislocation of a joint, in which the articulating surfaces remain in partial contact.
- SUBTENDTo use an angle to delimit (mark off, enclose) part of a straight or curved line, for example an arc or the opposite side of a triangle.
- SUMPTERThe driver of a packhorse.
- SURGEONOne who performs surgery; a doctor who performs operations on people or animals.