precipitation falling from clouds in the form of ice crystals
snow flurry
Noun
a light brief snowfall and gust of wind (or something resembling that)
snow mist
Noun
small crystals of ice
snowstorm
Noun
a storm with widespread snowfall accompanied by strong winds
solar energy
Noun
energy from the sun that is converted into thermal or electrical energy
streamline flow
Noun
flow of a gas or liquid in which the velocity at any point is relatively steady
solar power
Noun
energy from the sun that is converted into thermal or electrical energy
solar radiation
Noun
radiation from the sun
solar flare
Noun
a sudden eruption of intense high-energy radiation from the sun's surface
solar prominence
Noun
large eruptions of luminous hydrogen gas that rise thousands of kilometers above the chromosphere
solar wind
Noun
a stream of protons moving radially from the sun
sun-ray
Noun
a ray of artificial ultraviolet light from a sunray lamp
sound spectrum
Noun
the distribution of energy as a function of frequency for a particular sound source
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