spermatophobia
A form of hypochondriasis in which the patient erroneously believes himself to be suffering from spermatorrhea.

spermatotoxicity
The quality of being spermatotoxic.

spermaturia
presence of sperm in the urine

spermidium
An achene.

spermiogeneses
plural of spermiogenesis

spermiogenesis
The final stage of spermatogenesis. It involves the maturation of the spermatids into spermatozoa.

spermiotoxicity
The condition of being spermiotoxic

spermlessness
Absence of sperm.

spermology
The study of seeds.

spermophagia
The ingestion of semen.

spermophobia
The fear of semen.
Synonym of germophobia.

speromagnetism
The quality of being speromagnetic.

spewage
The act of spewing, or material that is spewed out.

spewiness
The state of being spewy.

sphacelation
The process of becoming or making gangrenous; mortification.

sphacelations
plural of sphacelation

sphaeristeria
plural of sphaeristerium

sphaeristerium
A large open space connected with the Ancient Roman thermae, for exercise with balls after the bather had been anointed.

sphaeroclone
A type of megasclere spicule in some poriferans

sphaeroclones
plural of sphaeroclone

sphaerulite
Archaic form of spherulite.

sphagnology
The study of sphagnum mosses.

sphairistike
An early racquet sport that evolved into tennis.

spheksophobia
Fear of wasps.

sphenobasion
The midline point on the spheno-occipital synchondrosis.

sphenobasions
plural of sphenobasion

sphenochasm
A wedge-shaped strike-slip basin.

sphenography
The art of writing or deciphering cuneiform characters.

sphenoidotomies
plural of sphenoidotomy

sphenoidotomy
The creation of an opening in the wall of the sphenoid sinus

sphenopiezm
The squeezing together of rock layers in a wedge-shaped formation.

spherality
The property of being spheral.

spheration
The process of becoming spherical.

sphereing
The practice of humans traveling in a sphere, generally made of transparent plastic, usually for fun.

spheria
plural of spherium

sphericalities
plural of sphericality

sphericality
Sphericity.

sphericalization
Conversion to a spherical form

sphericalizations
plural of sphericalization

sphericalness
The quality or state of being spherical.

sphericities
plural of sphericity

sphericity
The quality of being spherical, being a sphere.
The ratio of the surface area of a given particle to the surface area of a sphere with the same volume.

sphericle
A small sphere.

sphericles
plural of sphericle

sphericon
A solid constructed by slicing a bicone with 90-degree apices through a plane containing both of them, rotating one half by 90 degrees, and reconnecting them; the resulting shape has a single continuous face, and two edges.

sphericons
plural of sphericon

spherics
The geometry and trigonometry of the surface of a sphere.

sphericule
A little sphere.

sphericules
plural of sphericule

spherification
The process of forming something into a sphere or spheres.

spherifications
plural of spherification

sphering
The practice of humans traveling in a sphere, generally made of transparent plastic, usually for fun.

spherisation
Alternative spelling of spherization.

spherium
A model of a form of atom composed of two electrons restricted to the surface of a sphere.

spherization
The process of spherizing.

spherochromatism
chromatic aberration

spheroform
A three-dimensional, convex form that has a constant thickness

spherogenesis
The formation of spherical stem cells

spheroidicity
The quality or state of being spheroidal.

spheroidisation
Alternative spelling of spheroidization

spheroidism
The quality of having a spheroidal shape.

spheroidite
A soft, ductile form of carbon steel producing by heating under certain conditions, and having a structure of rods or spheres of cementite within the primary structure.

spheroidites
plural of spheroidite

spheroidity
The quality or state of being spheroidal.

spheroidization
The process of spheroidizing.

spheroidizations
plural of spheroidization

spheronisation
Alternative form of spheronization.

spheronization
The formation of pellets into spheroids

spheropolygon
Synonym of spheropolyhedron.

spheropolygons
plural of spheropolygon

spheropolyhedra
plural of spheropolyhedron

spheropolyhedron
A polyhedron that approximates to a sphere

spherula
Alternative form of spherule.

spherulae
plural of spherula

spherule
A small sphere.

spherules
plural of spherule

spherulite
a minute spherical crystalline body having a radiated structure, observed in some vitreous volcanic rocks, as obsidian and pearlstone.

sphexishness
The state or condition of being sphexish.

sphincteralgia
Pain in the sphincter.

sphragistics
The study of seals, especially those attached to documents

sphugmicks
Obsolete spelling of sphygmics.

sphygmics
The scientific study of the circulatory pulse.

sphygmology
The study of the pulse.

sphygmomanometry
The measurement of blood pressure using a sphygmomanometer

spial
Espionage.
A spy.

spials
plural of spial

spicatum
Ellipsis of opus spicatum.

spicelessness
Absence of spice.

spiciness
The property of being spicy.

spicinesses
plural of spiciness

spiculogenesis
The formation and development of spicules

spiderdom
The condition of being a spider; or, spiders in general.

spideriness
The state or condition of being spidery.

spiderphobia
Synonym of arachnophobia.

spiffiness
The state or condition of being spiffy.

spifflication
Alternative spelling of spiflication.

spiflication
The act of spiflicating, or the state of being spiflicated; annihilation.

spigarello
A cultivar of Brassica oleracea.

spikedness
The quality of being spiked.

spikegrass
Either of two tall perennial American grasses (Uniola paniculata and Uniola latifolia) with broad leaves and large flattened spikelets.

spikegrasses
plural of spikegrass

spikein
Alternative form of spike-in.

spikeins
plural of spikein

spikenail
A large nail or spike.

spikenails
plural of spikenail

spiketrain
A series of related spikes (typically on a graph or an oscilloscope)

spikiness
The state or condition of being spiky.

spikinesses
plural of spikiness

spillage
The process or action of spilling.
That which has been spilled.

spillages
plural of spillage

spillback
The blockage of an intersection by traffic as a result of the traffic lights changing and preventing progress.
The spread of an infectious pathogen from humans to non-human animals.

spillbacks
plural of spillback

spillet
A long fishing line with multiple hooks; a trawl or boulter.

spillets
plural of spillet

spilliard
Alternative form of spillet.

spilliards
plural of spilliard

spillover
That which overflows; the excess or side effect.
The spread of infectious disease between different species of animal and particularly to humans.

spillovers
plural of spillover

spilter
Any of the small branches on a stag's head.

spilters
plural of spilter

spim
Unsolicited messages sent to cellular phones.
Unsolicited commercial messages sent via an instant messaging system.

spime
An object that could be remotely tracked through space and time.

spimes
plural of spime

spimming
The sending of spim.

spims
plural of spim

spinar
A rapidly-rotating supermassive star, once hypothesized as the identity of quasars

spinarama
Alternative form of spinorama.

spinaramas
plural of spinarama

spinars
plural of spinar

spinathon
A long period of spinning.

spinathons
plural of spinathon

spinback
A disc jockey's technique of suddenly playing a section of a record in reverse.

spinbacks
plural of spinback

spincaloritronics
The interaction of electron spins with heat currents within magnetic materials.

spindlemaking
The manufacture of spindles.

spindliness
The quality of being spindly.

spindown
A reduction in spin speed (of a hard disk, pulsar etc)

spinelessness
The state or quality of being spineless (not having a spine (literally or figuratively)); cowardice.

spinescence
The quality of being spinescent

spinescences
plural of spinescence