| A | B |
|---|
| Anti | against |
| antibiotic | a substance that kills germs |
| antifreeze | a substance that prevents liquid from freezing |
| antisocial | withdrawn from, or hostile to, other people or social institutions |
| aqua, aque | water |
| aquamarine | a bluish sea-green color |
| aster, astro | star |
| astronaut | a person who travels in space |
| audi | to hear |
| audience | the group of people attending or listening to something, especially a movie, a concert or a play |
| auditorium | a large theater or concert hall |
| auto | self |
| autobiography | the story of a person's life written by that person |
| autonomous | self-governing |
| contra, contro | against |
| contrast | to compare by showing differences; an obvious difference |
| controversy | a difference of opinion that lasts a long time about an important matter |
| dict | to say |
| dictator | a ruler with unlimited power |
| verdict | a judgement or decision, especially that of a jury in a court case |
| extra | beyond, outside |
| extracurricular | outside the regular school program; not part of the normal curriculum |
| extravagant | wasteful, especially with money |
| geo | earth |
| geode | a globe-shaped hollow stone lined with crystals |
| geography | the science that deals with the surface of the earth |
| graph | to write |
| calligraphy | the art of fine handwriting |
| seismograph | an instrument that records earthquake vibrations |
| antiaircraft | designed for defense against air attack |
| antidote | a substance that counteracts poison |
| antiseptic | a substance used to prevent bacteria or germs that cause decay |
| aqualung | breathing equipment for underwater swimming or diving |
| aquaplane | a wide board that is towed by a motorboat, like a single water ski |
| aquarium | an artificial pond or tank or water where animals and plants are kept |
| aquatic | growing or living in water |
| aqueduct | a channel that carries large amounts of water |
| asteroid | one of the many small planets between Mars and Jupiter |
| asterisk | a starlike figure (*) used to indicated footnotes or references |
| astrology | the study of the possible influence of the stars on people in order to predict the future |
| astronomy | the science of the planets and stars |
| audible | loud enough to be heard |
| audiovisual | involving the use of both sight and sound |
| audition | a trial performance in which a musician or actor is heard and evaluated |
| auditory | having to do with hearing |
| autograph | a person's signature or handwriting |
| automatic | having a self-acting or self-regulating mechanism: done with out thought or conscious effort |
| automobile | a passenger vehichle with its own engine |
| contraband | any articles forbidden to be brought into or taken out of a country |
| contradict | to say the opposite; disagree |
| contrary | opposite or opposed; perverse or willful |
| dictate | to say something aloud that will be written or recorded by another; to command or order |
| diction | a style of speaking; the degree of preciseness or clarity in speech |
| predict | to foretell or say ahead of time that something will happen |
| extraneous | not essential; irrelevant |
| extraordinary | unusual, remarkable |
| extrasensory | beyond the range of normal senses |
| extraterrestrial | located or occurring outside the earth and its atmosphere |
| geology | the study of the earth, including its origin, structure, composition, and history |
| geometry | the branch of mathematics that deals with the properties of figures in space |
| geothermal | relating to the earth's internal heat |
| graphic | relating to writing, drawing or painting; vivid or lifelike |
| graphite | a soft, black, greasy-feeling form of carbon, used in pencils and as a lubricant |
| mimeograph | a duplicating machine that uses a type of stencil to reproduce written material |
| stenographer | a person who specializes in taking dictation by shorthand |
