1. to remove, cut, or melt
2. to remove by cutting, abrading, or evaporating

an event or condition that is not normal

to cancel an attempt. The Space Shuttle has several abort options, including an emergency return to the launch site to an "abort to orbit" (see ATO)

the theoretical temperature at which substances possess no thermal energy, equal to -273.15° Celsius, or -459.67° Fahrenheit.

existing only in the mind; difficult to understand

to increase the speed of; to cause to go faster

the rate of change of velocity with respect to time

an instrument for measuring acceleration or for detecting and measuring vibrations

accent, emphasize, or to intensify

easily reachable; easily understood

to adapt to a new temperature, altitude, climate, environment, or situation

To gather, build up, or pile up

degree of conformity of a measure to a standard or a true value

exact or correct; without mistakes or errors

a chemical compound that dissolves in water, tastes sour, and makes blue litmus paper turn red

1. related to sound or the sense of hearing
2. designed to absorb or control sound

of or pertaining to sound, the sense of hearing

a word formed from the initial letter or letters of each of the successive parts or major parts of a compound term

to change in order to fit new conditions

tending toward, fit for, or having a capacity for changing to meet surroundings

to deal with

tending to hold or stick

bad, harmful, hostile

the action of pleading for, or supporting a cause or proposal

of, in, or caused by the air

exercise that requires oxygen

the motion of gases, particularly air, and the movement of objects in the air

1. a branch of dynamics that deals with the motion of air and other gaseous fluids and with the forces acting on bodies in motion relative to such fluids
2. science of the interaction between moving air and solid surfaces

distortion as from bending or flexing in a structure (as an airplane wing or a building) caused by aerodynamic forces

a highly porous solid formed from a gel, such as silica gel, in which the liquid is replaced with a gas

space comprising the Earth's atmosphere and the space beyond

either of two movable flaps on the wings of an airplane that can be used to control the plane's rolling and banking movements

A surface, such as a wing, whose shape and orientation control stability, direction, lift, thrust, or propulsion

a step-by-step procedure for solving a problem or accomplishing some end especially by a computer

the school, college, or university that one has attended

to a great height, in the air

to change or make different; modify

acting in the place of another; a substitute

repeated change from one thing or state to another and back again

a situation presenting a choice between two or more things only one of which may be chosen

1. the vertical elevation of an object above a surface
2. height above the Earth's surface

requiring much effort; challenging

1. relating to, or being a mechanism in which data is represented by continuously variable physical quantities
2. having similarities in some respects to somthing that is otherwise different

drawing a comparison in order to show a similarity between two things that are otherwise not alike

the separation of something into its parts in order to examine them

to break down into parts and carefully study

one who has come before another; an earlier type

not having enough iron in the blood

something that is irregular

to prevent an object from icing

make a prediction about; tell in advance

something that stops deterioration of a metal caused by oxidation, also know as rust

material that is identical to physical matter except that its atoms have opposite charges. For example, an electron has a negative charge, but an anti-electron has a positive charge.

a substance, such as vitamin E, vitamin C, or beta carotene, thought to protect body cells from the damaging effects of oxidation

the great arterial trunk that carries blood from the heart to be distributed by branch arteries through the body

the opening in a photographic lens that admits the light

a form of anemia in which the capacity of the bone marrow to generate red blood cells is defective, caused by bone marrow disease or exposure to toxic agents, such as radiation, chemicals, or drugs.

a group of materials or devices used for a specific purpose

an external part that extends from the main section of an object, such as an arm, leg, or antenna

anxious or fearful about the future; uneasy

the final path followed by an aircraft as it is landing

a continuous portion (as of a circle or ellipse) of a curved line

the study of past human life and culture

a place or collection containing records, documents, or other materials of historical interest

order; a regular and imposing arrangement

any of the tubular branching muscular- and elastic-walled vessels that carry blood from the heart through the body

the act or process of rising or going upward

a distinct feature or element of an object or being

a useful or valuable quality, person, or thing; an advantage or resource

any of the small celestial bodies found especially between the orbit of Mars and Jupiter

a visual defect in which the surface of the eye, usually the cornea, is not equally curved, preventing light rays from focusing clearly at one point on the retina, resulting in blurred vision

a scientist who studies a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena

a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena

the whole mass of air surrounding the Earth

of, relating to, or occurring in the atmosphere

pressure caused by the weight of the atmosphere

a person who studies the whole mass of air surrounding the Earth

abort to orbit. A condition in which a failure, such as a premature engine shutdown, means the Shuttle won't be able to reach its planned orbit, but can reach a different safe orbit where operations might be continued

decrease in size or wasting away of a body part or tissue

1. the position of an aircraft or spacecraft determined by the relationship between its axes and a reference datum (as the horizon or a particular star)
2. Of an aircraft in flight, the angle made be its axes with the relative airflow

a quality or characteristic that is assigned to something or someone

to explain by indicating a cause

fearless daring, arrogance

able to be heard

to make greater, more numerous, larger, or more intense

the chamber or either of the chambers of the heart that receives blood from the veins and forces it into the ventricle or ventricles

produced independently of external influence or aid

relating to, or caused by autoantibodies or lymphocytes that attack molecules, cells, or tissues of the organism producing them

to control or operate by automation

having a self-acting or self-regulating mechanism

the technique of making an apparatus, a process, or a system operate automatically

a part of the vertebrate nervous system that innervates smooth and cardiac muscle and glandular tissues and governs involuntary actions

1. undertaken or carried on without outside control
2. existing or capable of existing independently, without outside control
3. responding, reacting, or developing independently of the whole
   

the science, skill, or work of flying airplanes

one who operates an aircraft; a pilot

marked by active interest and enthusiasm

the act of avoiding or shunning something; to keep something from happening

a straight line about which a body or geometric object rotates