roseola infantumA childhood disease caused by human herpesvirus, and characterised by a high-grade fever and a rash which appears as the fever is seemingly resolving.
rota FortunaeSynonym of Wheel of Fortune (“the mythological wheel turned randomly by Fortuna, the Roman goddess of fate, fortune, and luck, to determine people's fortunes which were thus unpredictable”).
ruina montiumA mining technique in Ancient Rome, similar in principle to Pascal's barrel, where miners would excavate narrow cavities in a mountain and fill them with water to cause pressures high enough to fragment the rock.
rusticateTo be suspended or expelled temporarily from the university, either compulsorily or voluntarily.
rusticatioFull-immersion Latin-language “summer camp” in the countryside or a secluded setting. Participants eat, work, play, and speak nothing but Latin for the entire period.
sacculusA small bag of herbs or medicinal substances, applied to the body.
saccusA bladder or winglike structure found on the pollen grains of many species of conifer. The shape or number of the sacci on a pollen grain can help identify the species it came from.
sacellumA small chapel, as a monument within a church.
saniesA thin mixture of pus and blood serum discharged from a wound; ichor.
santonicaAn Asian plant (Seriphidium cinum, syn. Artemisia cina), related to wormwood, which has been used since ancient times as a vermifuge due to its santonin content.
SarmizegetusaThe capital and the military, religious and political centre of the Dacians prior to the wars with the Roman Empire, located among the Orăştie Mountains in present-day Romania.
SatannianiA heretical sect which was named after its founder, Satannius, which shared some tenets of belief with the Æternales.
scabellumA kind of percussion instrument played by the foot, used in dramatic performances.
scalpellumOne of the four filamentous organs in the proboscis of hemipterous insects.
scalprumA toothed raspatory used in trephining and in removing carious bone.
scandalizeTo cause great offense to (someone); to shock with something scandalous.
schismaA very small interval equal to half a comma.
schoenusAn ancient unit of length and area based on the knotted cords first used in Egyptian surveying.
sciaenaAny of several nocturnal fish, of the genus Sciaena, from the Eastern Atlantic, Mediterranean Sea and Black Sea; a croaker.
scientia potentia estKnowledge is power; with knowledge or education, one's potential or abilities in life will certainly increase.
scintillateTo give off sparks; to shine as if emanating sparks; to twinkle or glow.
scire faciasA judicial writ directing the sheriff to make the record known to a specified party, and requiring that defendant to show cause why the party bringing the writ should not be able to cite that record in his own interest, or why, in the case of letters patent and grants, the patent or grant should not be annulled and vacated.
scrofulaA form of tuberculosis, most common in women 30-40 years of age, tending to cause enlarged and degenerated lymph nodes, especially in the neck, and often chronic, intractable skin inflammation as well.
scrutatorA person who scrutinizes or investigates.
scruteTo examine (something) carefully; to scrutinize.
scutulumA yellow perifollicular saucer- or cup-shaped crust with a cheesy odour, composed of dense mats of mycelia and epithelial debris, often occurring on the scalp and characteristic of favus.
scytaleA cylinder with a strip of parchment wound around it on which a message is written, used for cryptography by the ancient Spartans.