| abolitionism |
advocacy of or legal movement toward abolition, esp. of slavery in the United States. |
| acetylcholine |
a form of this compound used in medicine for its ability to decrease blood pressure and cause muscular movement in such organs as the alimentary canal. [1/2 definitions] |
| action |
a movement or series of movements. [1/8 definitions] |
| active |
capable of constant or quick movement. [1/7 definitions] |
| adagio |
in music, a passage, movement, or piece that is played adagio. [1/4 definitions] |
| advance |
a forward movement in space. [1/14 definitions] |
| agile |
quick and graceful in physical movement; nimble. [1/2 definitions] |
| agitato |
quick and restless or excited in movement or style; agitated (used as a musical direction). |
| air |
movement of the atmosphere; breeze or wind. [1/8 definitions] |
| airfoil |
any aircraft part or surface, such as a wing or rudder, designed to utilize aircurrents to aid in propelling, lifting, and controlling movement. |
| air traffic |
movement of airplanes and other air transportation vehicles through the air or on runways. |
| allegretto |
an allegretto passage, movement, or piece. [1/2 definitions] |
| allegro |
an allegro passage, movement, or piece. [1/2 definitions] |
| amyotrophic lateral sclerosis |
a disease that causes loss of control in muscle movement because of the degeneration of nerve cells; Lou Gehrig's disease. |
| andante |
an andante passage, movement, or piece. [1/2 definitions] |
| andantino |
an andantino passage, movement, or piece. [1/2 definitions] |
| angle of incidence |
the angle that the line of movement of a body or of radiation, meeting a surface, makes with a line that is at right angles to the surface at the point of meeting. |
| animate |
to give (a cartoon or object) the illusion of movement. [1/9 definitions] |
| animated cartoon |
a motion picture made by photographing a sequence of drawings showing stages of movement, so as to create the illusion of motion when the images are projected in quick succession. |
| antagonist |
one muscle that causes movement in the opposite direction from that caused by another. [1/3 definitions] |
| antiperistalsis |
reverse movement in the intestines, alimentary canal, or similar organs, causing the contents of these organs to move backwards. |