Word origins

• schwa primumA vowel formerly reconstructed for Proto-Indo-European; now generally held to be a syllabic laryngeal consonant.
• schwa secundumAn anaptyctic vowel inserted to break up illicit word-initial consonant clusters in Proto-Indo-European, particularly word-initial stop + stop + resonant sequences.
• scorbuticOf, pertaining to, or suffering from scurvy.
• scorbutusThe disease scurvy.
• scrobiculaA small groove, slit, or pit, commonly referring to roughness in the shell, or other firm surface, of an organism. cf. scrobe.
• scrofulousOf, related to, or suffering from scrofula (form of tuberculosis tending to cause enlarged lymph nodes and skin inflammation).
• secundogenitureThe condition of being secondborn
• septaemiaSynonym of septicemia.
• septenateHaving seven parts.
• simultaneumA simultaneous occurrence of unrelated events.
• sinus venosusThe first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.
• SocinianA member of a particular nontrinitarian Christian denomination founded in the late 16th century.
• sorusAny reproductive structure, in some lichens and fungi, that produces spores.
• spermuleA spermatozoon.
• staminodeAn abortive stamen, or any organ modified from an abortive stamen; a staminodium
• stapediusA small muscle of the middle ear that arises from the wall of the tympanum and is inserted into the neck of the stapes by a tendon that sometimes contains a slender spine of bone; it is the smallest skeletal muscle in the human body, serving to stabilize the stapes to check and dampen its vibration.
• steatopygousPertaining to steatopygia; having fat or prominent buttocks.
• sternocleidomastoidRelating to or involving the sternum, the clavicle and the mastoid process of the temporal bone.
• sternohyoidOf or relating to the sternum and the hyoid bone.
• sternohyoideusSynonym of sternohyoid muscle.
• sternothyroidRelating to the sternum and the thyroid cartilage.
• stichidiumA special pod-like or fusiform branch containing tetraspores, found in certain red algae.
• stipitatePossessing a stalk.
• stomiumThe region of a sporangium where dehiscence takes place
• strobilaA jointed series of segments of an organism, as of the body of a tapeworm, posterior to the unjointed collum.
• styloglossusA small muscle that arises from the styloid process of the temporal bone, inserts along the side and underpart of the tongue, and functions to draw up the sides of the tongue to create a trough for swallowing.
• stylohyoidOf or relating to the styloid process of the temporal bone and to the hyoid bone.
• stylohyoideusSynonym of stylohyoid muscle.
• stylopharyngeusA slender muscle in the head that arises from the base of the styloid process of the temporal bone, inserts into the side of the pharynx, and acts with the contralateral muscle in swallowing to increase the transverse diameter of the pharynx by drawing its sides upward and laterally.
• sublativeA case of nouns in Finno-Ugric languages used to express the destination of movement, originally onto the surface of something (e.g. climb onto a tree), and, by extension, in other figurative meanings as well (e.g. to university, or about (a subject)).
• subregnumA subkingdom.
• subrisivePlayful, tongue-in-cheek.
• subsultoryBounding; leaping; moving by sudden leaps or starts.
• subsultusA twitching, or convulsive motion.
• subtribusSynonym of subtribe.
• syconiumA collective fleshy fruit, in which the ovaries are hidden within a hollow receptacle, as in the fig; a hollow ball with a stalk at one end and an opening (ostiole) at the other, with flowers or fruits on the inside
• sylvaniumtellurium
• synchondrosisA form of only slightly moveable articulation between bones joined by hyaline cartilage, as in the spinal vertebrae.
• syndesmosisA slightly movable articulation or joint where the contiguous bony surfaces are rough and are united by an interosseous ligament (e.g. between the fibula and tibia at the ankle).
• syndesmoticRelating to syndesmosis
• synonymiconSynonym of thesaurus.
• synoviaSynonym of synovial fluid.
• syntexisA change in the structure of magma by melting or the assimilation of a different type of rock.
• taphrenchymaSynonym of bothrenchyma
• tarsaleA tarsal bone or cartilage, especially one of the series articulating with the metatarsals.
• tectiformRoof-shaped; sloping downwards on two sides from a raised central ridge.
• teliumA sorus, in the form of a pustule, in the tissue of plants infected with rust fungi.
• tendinousOf, pertaining to, or resembling a tendon or sinew.
• tenebrificProducing darkness, obscuring; (loosely) gloomy.
• tensor fasciae lataeA muscle that arises especially from the anterior part of the iliac crest and from the anterior superior iliac spine, is inserted into the iliotibial band of the fascia lata about one third of the way down the thigh, and acts to flex and abduct the thigh.
• tensor tympaniA small muscle of the middle ear that is located in the bony canal just above the bony part of the Eustachian tube, that arises from the canal containing it, from the cartilaginous portion of the Eustachian tube, and from the adjacent greater wing of the sphenoid bone, that is inserted by a long tendon into the manubrium of the malleus near its base, and that serves to adjust the tension of the tympanic membrane.
• tensor veli palatiniA ribbonlike muscle of the palate that arises from the scaphoid fossa, from the spine of the sphenoid bone, and from the lateral cartilaginous wall of the Eustachian tube, that is attached by a tendon which hooks around the pterygoid plate of the sphenoid bone to insert especially into the soft palate, and that acts especially to tense the soft palate.
• tentorium cerebelliAn arched fold of dura mater that covers the upper surface of the cerebellum, supports the occipital lobes of the cerebrum, and has its posterior and lateral border attached to the skull and its anterior border free.
• testificatorA testifier.
• theciumThe hymenium
• thlipsisCompression, especially constriction of vessels by an external cause.
• thriambusA hymn to Dionysus, sung in processions in his honour.
• thuliaThe rare earth thulium oxide, Tm₂O₃.
• thuriferAn acolyte who carries a thurible.
• thyroarytenoidOf or pertaining to both the thyroid and arytenoid cartilages of the larynx.
• thyrohyoidOf or pertaining to the thyroid cartilage of the larynx and the hyoid arch.
• torus tubariusA protrusion on the lateral wall of the nasopharynx marking the pharyngeal end of the cartilaginous part of the Eustachian tube.
• trehalaManna from the cocoons of the insects Larinus maculatus and Larinus nidificans.
• -tremeHaving a trema (hole or aperture) or tremata of the type, position or number specified by the prefix.
• tripsistrituration
• trismusThe inability to open the mouth normally, typically as a result of disease.
• tritordeumAn amphiploid cereal derived from the cross between a South American wild barley (Hordeum chilense) and durum wheat.
• tylarusOne of the soft pads on the undersurface of the toes of some birds, such as owls and ospreys.
• ubicateTo find and specify the location of (someone or something); to locate.
• ubicationThe condition or fact of being in, or occupying, a certain place or position; whereness, ubiety; also, a location.
• umbilicateHaving a navel.
• umbonateHaving an umbo
• urachusA band of fibrous tissue extending from the bladder to the umbilicus.
• urosteonA median ossification at the back of the lophosteon in the sternum of some birds.
• valedictionA speech made when leaving or parting company.
• verumontanumAn elevation or crest in the wall of the urethra where the seminal ducts enter it.
• VidianOf or relating to the Italian anatomist Guido Guidi (latinized name Vidus Vidius).
• volucrineOf or pertaining to birds.
• vomituritionRepeated ineffectual attempts at vomiting; retching.
• xanthelasmaA deposit of cholesterol on the eyelid.
• zenzicrelating to the square of a number
• zoëaA larval stage of certain decapod crustaceans, especially of decapods such as crabs and certain Anomura, also called the copepod stage, characterized by spines on the carapace and rudimentary thoracic and abdominal limbs.
• zooeciumOne of the cells or tubes which enclose the feeding zooids of Bryozoa.
• zoognosyzoology
• ZuingliusUlrich Zwingli
• zygomaticusOne of several small subcutaneous facial muscles arising from or in relation with the zygomatic bone.
• zygomaticus majorA slender band of muscle on each side of the face that arises from the zygomatic bone, inserts into the orbicularis oris and skin at the corner of the mouth, and acts to pull the corner of the mouth upward and backward when smiling or laughing.
• zygomaticus minorA slender band of muscle on each side of the face that arises from the zygomatic bone, inserts into the upper lip between the zygomaticus major and the levator labii superioris, and acts to raise the upper lip upward and laterally.