Dictionary

All Word
speech spectrum Noun the average sound spectrum for the human voice
sunspot Noun a cooler darker spot appearing periodically on the sun's photosphere
south wind Noun a wind from the south
souther Noun a wind from the south
sound projection Noun the acoustic phenomenon that gives sound a penetrating quality
spherical aberration Noun an optical aberration resulting in a distorted image
spillover Noun (economics) any indirect effect of public expenditure
squall Noun sudden violent winds
squall Verb utter a sudden loud cry
squall Verb make high-pitched, whiney noises
squall Verb blow in a squall
static electricity Noun electricity produced by friction
sonic barrier Noun the increase in aerodynamic drag as an airplane approaches the speed of sound
stellar parallax Noun the heliocentric parallax of a star
sound barrier Noun the increase in aerodynamic drag as an airplane approaches the speed of sound
strong force Noun (physics) the interaction that binds protons and neutrons together in the nuclei of atoms
stone pine Noun medium-sized two-needled pine of southern Europe having a spreading crown
scale moss Noun moss-like liverwort with tiny scalelike leaves
seed fern Noun an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
subdivision Gnetophytina Noun gymnospermous flowering plants
silver pine Noun tall pine of western North America with stout blue-green needles
silver pine Noun timber tree of New Zealand having shiny white wood
subdivision Coniferophytina Noun cone-bearing gymnosperms dating from the Carboniferous period
southwestern white pine Noun medium-size pine of northwestern Mexico
spore Noun a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion
subdivision Pinophytina Noun most conifers: in some systems classified as a class (Pinopsida) and in others as a subdivision (Pinophytina)
subdivision Cycadophytina Noun palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders
subdivision Cycadophyta Noun palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders
swamp pine Noun any of several pines that prefer or endure moist situations such as loblolly pine or longleaf pine
southern yellow pine Noun large three-needled pine of southeastern United States having very long needles and gnarled twisted limbs
sporocarp Noun specialized leaf branch in certain aquatic ferns that encloses the sori or clusters of sporangia
spore case Noun specialized leaf branch in certain aquatic ferns that encloses the sori or clusters of sporangia
spore case Noun organ containing or producing spores
shortleaf pine Noun large pine of southern United States having short needles in bunches of 2-3 and red-brown bark when mature
stipule Noun a small leafy outgrowth at the base of a leaf or its stalk
single-leaf Noun pinon of southwestern United States having solitary needles and often many stems
single-leaf pine Noun pinon of southwestern United States having solitary needles and often many stems
single-leaf pinyon Noun pinon of southwestern United States having solitary needles and often many stems
spermatophyte Noun plant that reproduces by means of seeds not spores
seed plant Noun plant that reproduces by means of seeds not spores
seedling Noun young plant or tree grown from a seed
spruce pine Noun large two-needled pine of southeastern United States with light soft wood
spruce pine Noun shrubby two-needled pine of coastal northwestern United States
spruce pine Noun small spruce of boggy areas of northeastern North America having spreading branches with dense foliage
spruce pine Noun common forest tree of the eastern United States and Canada
subalpine larch Noun medium-sized larch of the Rocky Mountains
silver spruce Noun tall spruce with blue-green needles and dense conic crown
stringybark pine Noun Australian cypress pine with fibrous inner bark
southern white cedar Noun slow-growing medium-sized cedar of east coast of the United States
silver fir Noun any of various true firs having leaves white or silvery white beneath