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spermatic of, pertaining to, or like sperm or sperm cells; seminal. [2 definitions]
spermato- seed; sperm.
spermatophore a compact mass of spermatozoa produced by males of certain animal species, such as salamanders and arthropods, that is transferred to the female during mating.
spermatophyte any plant that bears seeds.
spermatozoon an animal's mature male reproductive cell, usu. propelled by a moving tail.
sperm oil a lubricating oil that is obtained from sperm whales.
-spermous having (such or so many) seeds; -spermal.
sperm whale a large, toothed whale with a huge, squarish head from which sperm oil and spermaceti are obtained.
spew to spurt out (food brought up from the stomach); vomit. [5 definitions]
sphagnum any of several related soft, pale mosses obtained chiefly from bogs as peat, and often used for potting plants.
sphalerite an ore, usu. brown, from which zinc is extracted; zinc sulfide.
sphenoid of or relating to the sphenoid bone. [3 definitions]
sphenoid bone see sphenoid.
-sphere something related to or resembling a sphere. [2 definitions]
sphere a round, three-dimensional geometric figure in which every point on the surface is an equal distance from the center. [6 definitions]
sphere of influence foreign territory over which a state or nation exerts cultural, political, economic, or military authority. [3 definitions]
spherical having or nearly having the shape of a sphere; rounded; globular. [3 definitions]
spheroid a flattened sphere created by revolving an ellipse about one of its axes.
sphincter a circular band of muscle that surrounds a body opening or passage and can constrict or close it.
sphinx in Egyptian mythology, a creature with a lion's body and the head of a human or animal. [4 definitions]
sphygmomanometer an instrument that measures blood pressure in the arteries.