| balling gun | Balling iron An instrument used for administering boluses or capsules to animals. (05 Mar 2000) |
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| ballism | A type of involuntary movement affecting the proximal limb musculature, manifested as jerking, flinging movements of the extremity; caused by a lesion of or near the contralateral subthalamic nucleus. Usually only one side of the body is involved, resulting in hemiballismus. Synonym: ballism. Origin: G. Ballismos, a jumping about (05 Mar 2000) |
| ballismus | A type of involuntary movement affecting the proximal limb musculature, manifested as jerking, flinging movements of the extremity; caused by a lesion of or near the contralateral subthalamic nucleus. Usually only one side of the body is involved, resulting in hemiballismus. Synonym: ballism. Origin: G. Ballismos, a jumping about (05 Mar 2000) |
| ballistic | 1. Of or pertaining to the ballista, or to the art of hurling stones or missile weapons by means of an engine. 2. Pertaining to projection, or to a projectile. Ballistic pendulum, an instrument consisting of a mass of wood or other material suspended as a pendulum, for measuring the force and velocity of projectiles by means of the arc through which their impact impels it. Source: Websters Dictionary (01 Mar 1998) |
| ballistocardiogram | A record of the body's recoil caused by cardiac contraction, the ejection of blood into the aorta, and ventricular filling forces; has been used as a basis for calculating the cardiac output in man, but its lack of accuracy and reproducibility has caused it to be discarded. Origin: G. Ballo, to throw, + kardia, heart, + gramma, something written (05 Mar 2000) |
| ballistocardiograph | Instrument for taking a ballistocardiogram, consisting either of a moving table suspended from the ceiling, or of an apparatus that rests upon the patient's body, usually on the shins, together with a graphic recording system. (05 Mar 2000) |
| ballistocardiography | Technique of graphic representation of the movements of the body imparted by the ballistic forces (recoil and impact) associated with cardiac contraction and ejection of blood and with the deceleration of blood flow through the large blood vessels. These movements, quantitatively very minute, are translated by a pickup device (transducer) into an electrical potential which is suitably amplified and recorded on a conventional electrocardiograph or other recording machine. (12 Dec 1998) |
| ballistophobia | <psychology> Morbid fear of a projectile or missile. Origin: G. Ballista, catapult, fr. G. Ballistes fr. Ballo, + phobos, fear (05 Mar 2000) |
| balloon | 1. A bag made of silk or other light material, and filled with hydrogen gas or heated air, so as to rise and float in the atmosphere; especially, one with a car attached for aerial navigation. 2. A ball or globe on the top of a pillar, church, etc, as at St. Paul's, in London. 3. <chemistry> A round vessel, usually with a short neck, to hold or receive whatever is distilled; a glass vessel of a spherical form. 4. <chemistry> A bomb or shell. 5. A game played with a large infated ball. 6. The outline inclosing words represented as coming from the mouth of a pictured figure. Air balloon, a balloon for aerial navigation. Balloon frame, a house frame constructed altogether of small timber. Balloon net, a variety of woven lace in which the weft threads are twisted in a peculiar manner around the warp. Origin: F. Ballon, aug. Of balle ball: cf. It. Ballone. See 1st Ball, and cf. Pallone. Source: Websters Dictionary (01 Mar 1998) |
| balloon angioplasty | <cardiology> Use of a balloon catheter for dilatation of an occluded artery. It is used in treatment of arterial occlusive diseases, including renal artery stenosis and arterial occlusions in the leg. For the specific technique of balloon dilatation in coronary arteries, angioplasty, transluminal, percutaneous coronary is available. Coronary angioplasty is accomplished using a balloon-tipped catheter inserted through an artery in the groin or arm to enlarge a narrowing in a coronary artery. Coronary artery disease occurs when cholesterol plaque builds up (atherosclerosis) in the walls of the arteries to the heart. Angioplasty is successful in opening coronary arteries in 90% of patients. 40% of patients with successful coronary angioplasty will develop recurrent narrowing at the site of balloon inflation. (05 Mar 2000) |
| balloon catheter | A catheter used in arterial embolectomy or to float into the pulmonary artery. (05 Mar 2000) |
| balloon cell | An unusually large degenerated cell with pale-staining vacuolated or reticulated cytoplasm, as in viral hepatitis or in degenerated epidermal cell's in herpes zoster, a large form of nevus cell with abundant nonstaining cytoplasm, formed by vacular degeneration of melanosomes. (05 Mar 2000) |
| balloon cell nevus | A nevus in which many of the cells are large, with clear cytoplasm. (05 Mar 2000) |
| balloon counter pulsation | A form of circulatory assistance in which a balloon inflates in the aorta during diastole to improve diastolic pressure and deflates during systole to reduce left ventricular after load. (05 Mar 2000) |
| balloon dilatation | Nonoperative repair of occluded vessels, ducts, or valves by insertion of a balloon catheter. It is used to treat varices, torn retinas, renal and biliary calculi, gastric, bronchial and rectal stenoses, and heart valves, and includes catheterization with fogarty and foley catheters. (12 Dec 1998) |
| ballooning |
flying in a balloon
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| ballistics |
the trajectory of an object in free flight the science of flight dynamics
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| ballistocardiograph |
a medical instrument that measures the mechanical force of cardiac contractions and the amount of blood passing through the heart during a specified period by measuring the recoil of the body as blood is pumped from the ventricles
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| balloon |
small thin inflatable rubber bag with narrow neck ride in a hot-air balloon; "He tried to balloon around the earth but storms forced him to land in China" large tough nonrigid bag filled with gas or heated air become inflated; "The sails ballooned"
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| ballottement |
a palpatory technique for feeling a floating object in the body (especially for determining the position of a fetus by feeling the rebound of the fetus after a quick digital tap on the wall of the uterus)
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| ball | heavy iron ball attached to a prisoner by a chain |
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| ball | bearings containing small metal balls |
| ball | a boy who retrieves balls for tennis players |
| ball | (football) the football player who is carrying (and trying to advance) the ball on an offensive play |
| ball | a general purpose cartridge having a primer and a ball and a full charge of powder |
| ball | a team of professional baseball players who play and travel together |
| ball | floating ball that controls level in a water tank |
| ball | feathery fern of tropical Asia and Malaysia |
| ball | the baseball playing field |
| ball | a field game played with a ball (especially baseball) |
| ball | the most formal gown |
| ball | a team athlete who is skilled at stealing or catching the ball |