coronary /korˈə-nə-ri/

1. Relating to the region around an organ, esp the heart (anatomy)
2. Coronal

A coronary thrombosis

coronary artery noun

One of the branching arteries supplying blood to the heart-wall from the aorta

coronary artery bypass noun

A surgical procedure to restore adequate oxygen supply to the heart muscle by attaching lengths of vein taken from eg the leg to the aorta and bypassing blocked coronary arteries (also coronary bypass graft)

coronary care unit noun

A hospital ward in which patients are treated after a heart attack (abbrev CCU)

coronary thrombosis noun

A stoppage in a branch of a coronary artery by a clot of blood, which causes part of the heart muscle to die (see also myocardial infarction under myo-)

corona /kə- or ko-rōˈnə/

1. A crown or crown-like structure
2. The large, flat, projecting member of a cornice crowning the entablature (architecture)
3. The trumpet of a daffodil, etc, composed of ligules of the perianth leaves (botany)
4. A coloured ring round the sun or moon, distinguished from a halo by having a red outerpart
5. One of the sun's envelopes, outside the chromosphere, observable during total eclipse (astronomy)
6. A similar atmospheric envelope of a star (astronomy)
7. The glowing region produced by ionization of the air surrounding a high-voltage conductor (physics)
8. A round pendent chandelier, as hung from the roof of a church (also corona lucis /lūˈsis or looˈkis/)
9. A long cigar with straight sides and a blunt end

coronagraph or coronograph /-ōnˈə-gräf/ noun

A special telescope used to observe prominences and the corona around the edge of the sun

corˈonal /-ə-nl/ noun

A circlet, small crown or garland for the head

1. Relating to a crown, a corona, or to the top of the head
2. Like a crown
3. Cacuminal (phonetics)

coronary adjective see separate entry

corˈonāte or corˈonāted adjective

1. Crowned
2. (of shells) having a row of projections round the apex

coronāˈtion noun

The ceremony of crowning

corōˈnium noun

The name given to a hypothetical element in the solar corona assumed to explain spectral lines now known to be due to iron and nickel atoms that have lost a large number of electrons

coronal suture noun

The serrated line across the skull separating the frontal bone from the parietal bones

coronavirus noun

Any of a family of viruses that have proteins protruding from the surface in a crown-like structure

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