coron-, coroll-

1. The internal floral leaves of a flower; usually of some color other than green: The petals of flowers are known as corollas because they form whorls within the sepals or the outermost rings of parts that form flowers.
2. Etymology: from Latin, corona, "wreath, crown, chaplet".

1. Something that normally follows or results from another situation or action: There is often a corollary of increased crime as a result of poverty.

Destruction and suffering are always corollaries of wars.

2. Etymology: from Latin corollarium, "money paid for a gratuity"; originally "money paid for a garland"; hence "a gift, gratuity, something extra"; and in logic, "a proposition proven from another that has been verified."

1. A faintly colored luminous ring appearing to surround a celestial body that is visible through a haze or a thin cloud: A corona is the outermost parts of the sun's atmosphere which is visible in a total eclipse.
2. The luminous irregular envelope of highly ionized gas outside the chromosphere of the sun.
3. In architecture, the projecting top part of a cornice.
4. In anatomy, the crown-like upper portion of a bodily part or structure; such as, the top of the head.
5. In botany, a crown-shaped, funnel-shaped, or trumpet-shaped outgrowth or appendage of the perianth of certain flowers; such as, the daffodil or the spider lily which is also called "a crown".
6. In electricity, a faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode.

In astronomy, a type of telescope that artificially eclipses the sun's bright disk to reveal the lower parts of the outermost layer of the sun's atmosphere and any other prominences jutting out.

1. Characterized by, or referring to the head.
2. Relating to, or having the direction of the coronal suture or of the plane dividing the body into front and back portions.
3. In linguistics, a reference to articulation by raising the blade of the tongue, as with "t" in "tip" and "n" in "night".

A term used to describe any structure that encircles like a crown: In medical practice, it refers to the coronary arteries that encircle and supply the heart muscles with blood.

An operation to circumvent the narrowed or blocked arteries by grafting on additional blood vessels for the flowing of blood.

Damage to or malfunctions of the heart that are caused by narrowing or blockage of the arteries which supply blood to the heart muscle: Two of the manifestations of coronary heart disease (CHD) are "angina pectoris" or chest pain that is usually associated with physical discomfort or anxiety by the patient and acute "myocardial infarction" (AMI) (obstruction of the blood supply) or a heart attack.

The passage of blood through the arteries of the heart: When the heart is unable to provide coronary perfusions naturally, an external device may be used to keep the blood flowing through these blood vessels.

An intracardiac electrogram which records electrical potentials within the coronary sinus: A coronary sinus electrogram is used for the indirect monitoring of the left ventricular hollow parts or cavities in an organ or in each of the two main chambers of the heart, left and right.

The narrowing or blockage of one of the coronary arteries which supply blood to the heart by a thrombus or clot: Coronary thrombosis causes a section of the heart muscle to die because it has been deprived of oxygen which is one of the major causes of death in the U.S.

1. The act or ceremony of crowning a sovereign (king or queen) or another soverign.
2. The ceremony of installing a new monarch.

A photograph of the bright ring of light around the sun when it is shining.

The surgical removal of the sharp triangular projection from a bone of the mandible or jaw bone.

A discharge of electricity appearing as a bluish-purple glow on the surface of and next to a conductor when the voltage gradient exceeds a certain critical value resulting from the ionization of the air in the area around the high voltage.