| sphenoid | (noun) butterfly-shaped bone at the base of the skull | Synonyms: os sphenoidale, sphenoid bone |
|---|
| spheroid | (noun) a shape that is generated by rotating an ellipse around one of its axes | Synonyms: ellipsoid of revolution |
|---|
| sternocleidomastoid | (noun) one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head | Synonyms: musculus sternocleidomastoideus, sternocleido mastoideus, sternocleidomastoid muscle |
|---|
| steroid | (noun) any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects | - |
|---|
| (noun) any hormone affecting the development and growth of sex organs | Synonyms: sex hormone, steroid hormone |
| tabloid | (noun) newspaper with half-size pages | Synonyms: rag, sheet |
|---|
| (noun) sensationalist journalism | Synonyms: tab, yellow journalism |
| thyroid | (noun) located near the base of the neck | Synonyms: thyroid gland |
|---|
| tineoid | (noun) small dull-colored moth with chewing mouthparts | Synonyms: tineoid moth |
|---|
| toroid | (noun) a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle | Synonyms: torus |
|---|
| (noun) the doughnut-shaped object enclosed by a torus | - |
| toxoid | (noun) a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin | Synonyms: anatoxin |
|---|
| trapezoid | (noun) the wrist bone between the trapezium and the capitate bones | Synonyms: os trapezoideum, trapezoid bone |
|---|
| (noun) a quadrilateral with two parallel sides | - |
| typhoid | (noun) serious infection marked by intestinal inflammation and ulceration; caused by Salmonella typhosa ingested with food or water | Synonyms: enteric fever, typhoid fever |
|---|
| viroid | (noun) the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat | Synonyms: virusoid |
|---|
| virusoid | (noun) the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat | Synonyms: viroid |
|---|
| void | (noun) an empty area or space | Synonyms: emptiness, vacancy, vacuum |
|---|
| (noun) the state of nonexistence | Synonyms: nihility, nothingness, nullity |
| zooid | (noun) one of the distinct individuals forming a colonial animal such as a bryozoan or hydrozoan | - |
|---|