| A | B |
|---|
| vital | Of, relating to, or characteristic of life; necessary for life |
| revitalize | to give new life to |
| vitality | exuberant physical strength or mental vigor; power to live or grow |
| democracy | government by the people |
| demography | vital and social statistics, as of the births, deaths, diseases, marriages, etc., of populations |
| stereophonic | sound-reproduction system that uses two or more separate channels to give a more natural distribution of sound |
| stereotype | A conventional, formulaic, and oversimplified conception, opinion, or image; originally, A metal printing plate cast from a matrix molded from a raised printing surface, such as type |
| capitalism | an economic system based on private ownership of capital |
| Cubism | A movement in modern art that emphasized the geometrical depiction of natural forms |
| nihilism | The doctrine that nothing can be known; scepticism as to all knowledge and all reality |
| pluralism | The belief that no single explanatory system or view of reality can account for all the phenomena of life |
| recognize | To know or identify from past experience or knowledge |
| cognizant | Fully informed; conscious; aware |
| incognito | having one's identity concealed, as under an assumed name, esp. to avoid notice or formal attentions |
| cognoscenti | A person with superior, usually specialized knowledge or highly refined taste; a connoisseur |
| precognition | Knowledge of something in advance of its occurrence, especially by extrasensory perception; clairvoyance |
| surplus | something that remains above what is used or needed |
| surpass | to go beyond in amount, extent, or degree; be greater than; exceed |
| surcharge | an additional charge, tax, or cost |
| surfeit | overabundance; excess |
| surmount | To overcome (an obstacle, for example); conquer; To ascend to the top of; climb |
| surname | the name used to identify the members of a family (as distinguished from each member's given name) |
| alter ego | Another side of oneself; a second self; An intimate friend or a constant companion |
| alternative | one of the things, propositions, or courses of action that can be chosen |
| altruism | Unselfish concern for the welfare of others; selflessness |
| altercation | a heated or angry dispute; noisy argument or controversy |
| astronomy | The scientific study of matter in outer space |
| astrology | the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs |
| asteroid | A starlike body; esp. one of the numerous small planets whose orbits lie between those of Mars and Jupiter |
| disaster | widespread destruction and distress; a catastrophe |
| asterisk | a small starlike symbol (*), used in writing and printing as a reference mark or to indicate omission, doubtful matter, etc. |
| astrolabe | A medieval instrument, now replaced by the sextant, that was once used to determine the altitude of the sun or other celestial bodies. |
| dynamic | characterized by action or forcefulness or force of personality |
| dynamo | an electric generator, esp. for direct current; or, an energetic, hardworking, forceful person |
| dynasty | a sequence of rulers from the same family, stock, or group |
| dynamometer | a device for measuring mechanical force, as a balance |
| chronometer | any timepiece, esp. a wristwatch, designed for the highest accuracy |
| chronological | arranged in the order of time |
| synchronize | To occur at the same time |
| anachronism | something or someone that is not in its correct historical or chronological time, esp. a thing or person that belongs to an earlier time |
| hyperventilate | to breathe abnormally fast and deep |
| hyperbole | obvious and intentional exaggeration |
| lunar | of or pertaining to the moon |
| lunate | Shaped like a crescent-moon |
| lunatic | A person affected by lunacy; an insane person, esp. one who has lucid intervals; a madman; a person of unsound mind |
| lunette | A crescent-shaped or semicircular space, usually over a door or window, that may contain another window, a sculpture, or a mural |
| sublunar | situated beneath the moon; characteristic of or pertaining to the earth; terrestrial; mundane or worldly |
| octameter | consisting of eight measures or feet |
| octogenarian | a person who is between 80 and 90 years old |
| octagon | a polygon having eight angles and eight sides |
| octarchy | a government by eight persons |
| octave | a musical interval of eight tones |
| octopus | bottom-living cephalopod having a soft oval body with eight long tentacles |
| octahedron | a solid figure having eight faces |
| gyroscope | rotating mechanism in the form of a universally mounted spinning wheel that offers resistance to turns in any direction |
| gyrate | to move in a circle or spiral, or around a fixed point; whirl |
| spirogyra | freshwater algae consisting of minute filaments containing spiral chlorophyll bands |
| contradict | to assert the contrary or opposite of; deny directly and categorically |
| contrary | Opposite; in an opposite direction; in opposition; adverse |
| contravene | To act or be counter to; violate; To oppose in argument; gainsay |
| geothermal | of or pertaining to the internal heat of the earth |
| geography | The scientific study of the Earth's surface and its various climates, countries, peoples, and natural resources |
| geology | The science devoted to the study of the Earth, particularly the solid Earth and the rocks that compose it |
| geometry | The mathematical study of the properties, measurement, and relationships of points, lines, planes, surfaces, angles, and solids |
| heliotropic | turning or growing toward the light |
| heliocentric | Having the sun as the center |
| perihelion | the point in the orbit of a planet or comet at which it is nearest to the sun |
| aphelion | the point in the orbit of a planet or a comet at which it is farthest from the sun |
| parhelion | A bright spot sometimes appearing on either side of the sun, often on a luminous ring or halo |
| thermostat | a regulator for automatically regulating temperature by starting or stopping the supply of heat |
| thermos | a vacuum bottle or similar container lined with an insulating material, such as polystyrene, to keep liquids hot or cold |
| thermotropic | The tendency of plants or other organisms to bend toward or away from heat |
| tetrameter | A line of verse consisting of four metrical feet |
| tetrahedron | A polyhedron with four faces. |
| tetragon | a polygon having four angles or sides; a quadrangle or quadrilateral |
| thermometer | an instrument for measuring temperature |
| millimeter | one thousandth of a meter |
| odometer | An instrument that indicates distance traveled by a vehicle |
| telescope | An optical instrument used in viewing distant objects, as the heavenly bodies |
| microscope | an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye |
| periscope | Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight |
| horoscope | a diagram of the positions of the planets and signs of the zodiac at a particular time and place ; a prediction of someone's future based on the relative positions of the planets |
| unison | Harmony; agreement; concord; union |
| sonorous | rich and full in sound |
| sonnet | A 14-line verse form usually having one of several conventional rhyme schemes |
| dissonance | inharmonious or harsh sound; discord; cacophony |
| resonant | resounding or echoing, as sounds |
| supersonic | greater than the speed of sound waves through air |
| decade | a period of ten years |
| decimal | pertaining to tenths or to the number 10. |
| decagon | a polygon having ten angles and ten sides |
| decathlon | an athletic contest comprising ten different track-and-field events and won by the contestant amassing the highest total score |
| decimate | to destroy a great number or proportion of |
| dodecahedron | a solid figure having 12 faces |
| interstellar | between the stars |
| constellation | A cluster or group of fixed stars |
| amateur | a person who engages in a study, sport, or other activity for pleasure rather than for financial benefit or professional reasons |
| amorous | inclined toward or displaying love |
| amiable | having or showing pleasant, good-natured personal qualities; affable |
| amity | friendship; peaceful harmony |
