spermatozoon
A reproductive cell or gamete of a male, carried in semen, that fertilizes an ovum to produce a zygote.

spermhead
The head (main part) of a sperm cell

spermheads
plural of spermhead

spermiation
The release of mature spermatozoa from Sertoli cells

spermiations
plural of spermiation

spermidine
The triamine N-(3-aminopropyl)butane-1,4-diamine, originally obtained from semen, that is involved in cell metabolism.

spermidines
plural of spermidine

spermiduct
Synonym of vas deferens.

spermiducts
plural of spermiduct

spermies
sperm, spermatozoa

spermiostasis
The abnormal accumulation of spermatozoa in the epididymides and ductus deferens (of horses)

spermococcus
The nucleus of a spermatozoon

spermoduct
Synonym of vas deferens

spermoducts
plural of spermoduct

spermophagy
Synonym of spermatophagy.

spermophorum
A seminal vesicle.

spermosphere
A mass or ball of cells formed by the repeated division of a spermospore, each spermoblast of which is converted into a spermatozoid.
The zone in the soil surrounding a germinating seed.

spermospheres
plural of spermosphere

spermospore
The male germinal or seminal cell, from the breaking up of which the spermoblasts are formed and ultimately the spermatozoids.

spermospores
plural of spermospore

spermule
A spermatozoon.

spetch
A piece of skin used in making glue.

sphaerocyst
A rounded cell, found in clusters within the trama of some mushrooms.

sphaerocysts
plural of sphaerocyst

sphaeroplast
Alternative form of spheroplast.

sphaeroplasts
plural of sphaeroplast

sphenoidectomies
plural of sphenoidectomy

sphenoidectomy
The opening of the sphenoid sinus; the removal of the sphenoid bone

sphenosalpingostaphylinus
Synonym of tensor veli palatini.

spheroblasting
Misspelling of spheroplasting.

spherocyst
Alternative form of sphaerocyst.

spherocysts
plural of spherocyst

spherocyte
A red blood cell that is spherical rather than biconcave, as occurs in spherocytosis

spherocytes
plural of spherocyte

spheroechinocyte
An echinocyte in the form of a crenated sphere

spheroechinocytes
plural of spheroechinocyte

spherolith
A small kidney stone, typically in a neonate

spheroliths
plural of spherolith

spheromak
A particular form of stabilized magnetic field in which a plasma may be confined for use in nuclear fusion.

spheromaks
plural of spheromak

spheromastigote
Any cell that contains a spherosome

spheromastigotes
plural of spheromastigote

spheroplast
A cell from which the cell wall has been removed

spheroplasting
The removal of a cell wall to form a spheroplast

spheroplasts
plural of spheroplast

spherostomatocyte
A near-spherical stomatocyte

spherostomatocytes
plural of spherostomatocyte

spherulocyte
A hemocyte that contains spherules

sphincter
A 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 functioning.

sphincteroplasties
plural of sphincteroplasty

sphincteroplasty
The surgical reconstruction of a sphincter muscle.

sphincters
plural of sphincter

sphingolipidomics
The study of the sphingolipidome of an organism or cell

spinelet
A small spine (needlelike structure)

spinelets
plural of spinelet

spinneret
The organ a spider uses to spin its web.
A multipored device through which a plastic polymer melt is extruded into fibers.

spinnerets
plural of spinneret

spinnerette
Alternative form of spinneret.

spinnerettes
plural of spinnerette

spinocerebella
plural of spinocerebellum

spinocerebellum
The vermis, together with parts of the hemispheres of the brain; it regulates body movement

spinoculation
centrifugal inoculation (of cell cultures)

spinoculations
plural of spinoculation

spinode
A cusp.

spinogenesis
The development of dendritic spines in neurons

spinogram
A radiograph of the spine or spinal cord
A type of histogram

spinograms
plural of spinogram

spinoscalid
scalid

spinoscalids
plural of spinoscalid

spinotrapezius
The human trapezius.

spinule
A minute spine or thorn.

spinules
plural of spinule

spiralin
A mycoplasmal membrane lipoprotein

spirem
Alternative form of spireme.

spireme
The 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.)

spiremes
plural of spireme

spirems
plural of spirem

spirobacteria
plural of spirobacterium

spirobacterium
Any bacterium found in spiral filaments, such as the genus Vibrio.

spitstick
The penis.

spitsticks
plural of spitstick

spizzerinctum
Chutzpah, guts, nerve, or backbone.
Determination, ardor, or zeal.

splachnocranium
Misspelling of splanchnocranium.

splanch
A house with three levels inside a two-level skin.

splanches
plural of splanch

splanchnicectomies
plural of splanchnicectomy

splanchnicectomy
The dissection of splanchnic nerves

splanchnicolysis
The destruction of the splanchnic nerves.

splanchnicotomy
Alternative form of splanchnicectomy.

splanchnocele
A visceral cavity.

splanchnocranium
viscerocranium

splanchnocraniums
plural of splanchnocranium

splanchnopleura
Alternative form of splanchnopleure.

splanchnopleure
A layer of embryonic cells formed from the mesoderm and endoderm that develops into the wall of the viscera.

splanchnopleures
plural of splanchnopleure

splanchnoptosis
visceroptosis of the intestines

splanchnoskeleton
That part of the skeleton connected with the sense organs and the viscera.

splanchnoskeletons
plural of splanchnoskeleton

splancnocranium
Misspelling of splanchnocranium.

spleenocyte
Alternative form of splenocyte.

spleenocytes
plural of spleenocyte

splenalgia
Pain in the region of the spleen.

splenauxe
Enlargement of the spleen.

splenculi
plural of splenculus

splenculus
A lienculus.

splenectomies
plural of splenectomy

splenectomy
The surgical removal of the spleen.

splenectopia
Displacement of the spleen.

splenia
plural of splenium

splenii
plural of splenius

splenium
The thick posterior part of the corpus callosum of the brain.

spleniums
plural of splenium

splenius
Either of two flat oblique muscles which are attached to the vertebrae on each side of the neck and upper thoracic region and which draw back the head.

splenocleisis
Closure of the spleen, surgical procedure that induces the formation of fibrous tissue on the surface of the spleen to create a closure.

splenocyte
A type of monocyte characteristically found in spleen tissue

splenocytes
plural of splenocyte

splenodynia
Pain in the region of the spleen; splenalgia.

splenogenesis
The formation and development of the spleen

splenography
The scientific study or description of the spleen.

splenohepatomegaly
Hepatosplenomegaly.

splenology
The study of the spleen.

splenomegalia
Alternative form of splenomegaly.

splenomegalies
plural of splenomegaly

splenomegaly
Enlargement of the spleen (process); an enlargement of the spleen (instance).

splenopancreas
The conjoined spleen and pancreas in most snakes

splenopancreatectomies
plural of splenopancreatectomy

splenopancreatectomy
Removal of the spleen and the pancreas

splenopexies
plural of splenopexy

splenopexy
fixation of the spleen

splenorrhaphies
plural of splenorrhaphy

splenorrhaphy
suture of the spleen

splenosis
Formation of mini-spleens in other parts of the body, from the lodging of splenic tissue fragments in other regions, of limited splenic function.
A mini-organ resulting from an incidence of such.

splenotomies
plural of splenotomy

splenotomy
dissection of, incision into, or anatomy of the spleen.
splenectomy

splenotropism
Movement towards, or attraction to the spleen

splenovenographies
plural of splenovenography

splenovenography
An expanded form of venography to include the spleen

splitfinger
A split-finger fastball.

splitfingers
plural of splitfinger

spondyl
Alternative form of spondyle.

spondylalgia
Pain in the spine.

spondyle
A joint of the backbone; a vertebra.