| 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. |
| spic |
(offensive slang) a person of Hispanic descent. |
| Spica |
a blue-white star in the constellation Virgo, having a magnitude of 1.0. |
| spic-and-span |
variant of spick-and-span. |
| spicate |
having spikes, esp. a plant. [3 definitions] |
| spice |
any of various edible plant substances with a distinctive aroma or taste, such as pepper or ginger, that are used to flavor or preserve food and drink. [5 definitions] |
| spicebush |
an aromatic yellow-flowered laurel of eastern North America that produces a red fruit that was formerly dried and used as a spice. [2 definitions] |
| spiceless |
combined form of spice. |
| spice up |
to make (something) more interesting or exciting by adding new things. [2 definitions] |
| spick-and-span |
perfectly clean and tidy. [2 definitions] |
| spicule |
a small needlelike body, part, or projection, such as one of the hard processes forming the skeletal elements of invertebrates such as sponges. |
| spicy |
containing strong spices, as food. [3 definitions] |
| spider |
any of various eight-legged invertebrates, related to mites and ticks, that typically spin webs in which to nest and catch their prey. |
| spider monkey |
any of several tropical American monkeys that have long spidery limbs, rudimentary or no thumbs, and a long prehensile tail. |
| spider plant |
a plant of the lily family, with long, narrow, sometimes white-streaked leaves, commonly grown as a houseplant. |