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- APATHYLack of emotion or motivation; lack of interest or enthusiasm towards something; disinterest (in something).
- APOLOGIAA written defense of a position or belief.
- AXIOMA seemingly self-evident or necessary truth which is based on assumption; a principle or proposition which cannot actually be proved or disproved.
- AXONA nerve fibre which is a long slender projection of a nerve cell, and which conducts nerve impulses away from the body of the cell to a synapse.
- BALEENkeratinous material that makes up the plates in the mouth of the baleen whale (Mysticeti), which it uses to trap its food; formerly used in corsetry.
- BASALTA hard mafic igneous rock of varied mineral content; volcanic in origin, which makes up much of the Earth's oceanic crust.
- BOLUSA round mass of something, especially of chewed food in the mouth or alimentary canal.
- BRUXISMThe habit or practice of grinding the teeth, as while sleeping, or due to stress or certain drugs.
- CALYXThe outermost whorl of flower parts, comprising the sepals, which covers and protects the petals as they develop.
- CATAPLEXYAn abrupt loss of muscle tone, sometimes associated with narcolepsy.
- CHTHONICDwelling within the underworld.
- CYGNETThe young of a swan.
- CYMBALA concave plate of metal, usually brass or bronze, that produces a sharp, ringing sound when struck: played either in pairs, by striking them together, or singly by striking with a
- CYTOKINEAny of various small regulatory proteins that regulate the cells of the immune system.
- CYTOSINEA heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).
- DACTYLA metrical foot of three syllables of the shape | – ⏖ |:
- DIOPTERA unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.
- DRAMA small unit of weight, variously: Alternative form of drachm (“One sixteenth of an ounce avoirdupois (1.77 g; symbol: ʒ)”). Alternative form of drachm (“One eighth of an ounce apo
- DYNAMOAn electricity generator; a dynamo-electric machine.
- ELEGIACOf or relating to an elegy.
- ELEGYA mournful or plaintive poem; a funeral song; a poem of lamentation.
- EXORCISETo drive out (an evil spirit) from a person, place or thing, especially by an incantation or prayer.
- GYROIDALSpiral in arrangement or action.
- GYROSCOPEAn apparatus composed of a wheel which spins inside of a frame (gimbal) and causes the balancing of the frame in any direction or position. In the form of a gyroscopic stabilizer,
- HARPYA mythological creature generally depicted as a bird-of-prey with the head of a maiden, a face pale with hunger and long claws on her hands personifying the destructive power of st
- HELIXA curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase
- HYRAXAny of several small, paenungulate herbivorous mammals of the family Procaviidae from the order Hyracoidea, with a bulky frame and fang-like incisors, native to Africa and the Midd
- HYSSOPAny of several aromatic bushy herbs, of the genus Hyssopus, native to Southern Europe and once used medicinally.
- IDOLATRYThe worship of idols.
- IDYLLAny poem or short written piece composed in the style of Theocritus's short pastoral poems, the Idylls.
- KALEIDOSCOPEAn instrument consisting of a tube containing mirrors and loose, colourful beads or other objects; when the tube is looked into and rotated, a succession of symmetrical designs can
- KELOIDA hard raised growth of scar tissue at the site of an injury.
- KERATINThe protein of which hair and nails are composed.
- KLAXONA loud electric alarm or horn, especially as used in automobiles in the early 20th century.
- MISANTHROPEOne who has a negative view of the entire human race.
- MORPHA recurrent distinctive sound or sequence of sounds representing an indivisible morphological form; especially as representing a morpheme.
- MYOPIAA disorder of the vision where distant objects appear blurred because the eye focuses their images in front of the retina instead of on it.
- NYMPHAA nymph.
- ODOMETERAn instrument, usually embedded within the speedometer of a vehicle, that measures the distance the vehicle has traveled since production.
- PELAGICLiving in the open sea rather than in coastal or inland waters.
- PHANTASMSomething seen but having no physical reality; a phantom or apparition.
- PHILOSOPHYAn academic discipline that seeks truth through reasoning rather than empiricism, often attempting to provide explanations relating to general concepts such as existence and ration
- PHLOGISTONThe hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning.
- PHONEMEAn indivisible unit of sound in a given language. A phoneme is an abstraction of the physical speech sounds (phones) and may encompass several different phones.
- PHYLAXISProtection against infectious disease.
- POLITYOrganizational structure and governance, especially of a state or a religion.
- PRAGMATICPractical, concerned with making decisions and actions that are useful in practice, not just theory.
- PSALMODYThe singing or the writing of psalms.
- PSALTERSynonym of Psalms, particularly when printed as a separate work from the Bible.
- PSYLLIDAny of the host-specific plant-feeding insects of the family Psyllidae, which feed on plant juices.
- PSYLLIUMAny of several plants of Plantago subg. Psyllium.
- RHOMBUSA parallelogram having all sides of equal length. The rhombus diamond, as one of the suits seen in a deck of playing cards ( or ).
- SCHOLARA student; one who studies at school or college, typically having a scholarship.
- SCLERAThe white of the eye; the tough outer coat of the eye that covers the eyeball except for the cornea.
- SEMAPHOREAny equipment used for visual signalling by means of flags, lights, or mechanically moving arms, which are used to represent letters of the alphabet, or words.
- SIPHONA bent pipe or tube with one end lower than the other, in which hydrostatic pressure exerted due to the force of gravity moves liquid from one reservoir to another.
- SPHAGNUMAny of various widely distributed mosses, of genus Sphagnum, which slowly decompose to form peat.
- STYGIANAlternative form of Stygian (“of or relating to the river Styx”).
- SYRINXA set of panpipes.
- THORAXThe region of the mammalian body between the neck and abdomen as well as the cavity containing the heart and lungs.
- THROMBUSA blood clot formed from platelets and other elements that forms in a blood vessel in a living organism, and causes thrombosis or obstruction of the vessel at its point of formatio
- XENOGAMIESThe transfer of pollen from the anthers of one plant to the stigma of another; cross-pollination.
- XENOPHOBICExhibiting or characterised by xenophobia, a fear or hatred of strangers, foreigners, or extraterrestial life.
- ZEPHYRA light wind from the west.
- ZITHERA musical instrument consisting of a flat sounding box with numerous strings placed on a horizontal surface, played with a plectrum or fingertips.