heading


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Idioms, Wikipedia.

heading

1. the angle between the direction of an aircraft and a specified meridian, often due north
2. the compass direction parallel to the keel of a vessel

Heading

 

ear formation, a phase in the development of cereal plants, characterized by the emergence of a head from the sheath of the upper leaf (from the spike in wheat, rye, barley, and other spiked grains and from the panicle in oat, millet, rice, and other paniculate grains). In corn, heading begins with the tasseling of the male inflorescence, or the panicle, on the apex of the stem. Four or five days later the female inflorescence, or the cob, appears on the axil of the leaf. During heading a plant requires more nutrients and a greater amount of moisture. Proper nourishment, moisture, and light promote good development of the inflorescences and simultaneous heading. Prolonged heading results in uneven maturation, making harvesting difficult and leading to crop losses.


Heading

 

(aircraft), the angle between the north direction of a meridian and the projection of an aircraft’s longitudinal axis onto the horizontal plane. The heading is calculated in degrees clockwise from the direction of the meridian. It is called a true heading if it is calculated from the geographic meridian and a magnetic heading if it is calculated from a magnetic meridian. It may be determined by means of magnetic and celestial compasses, directional gyroscopes, or radio compasses. The efficient combination of such instruments into a single compass system eliminates to a considerable extent the deficiencies of separate compass systems, so that it becomes possible to measure headings in all parts of the earth, at any time of day, and under any meteorological conditions.

heading

[′hed·iŋ]
(civil engineering)
In tunnel construction, one or more small tunnels excavated within a large tunnel cross section that will later be enlarged to full section.
(navigation)
The horizontal direction in which a ship actually points or heads at any instant, expressed in angular units from a reference direction, usually from 0° at the reference direction clockwise through 360°.
In air navigation, the horizontal direction in which an aircraft points or heads, that is the direction of the longitudinal axis, measured as in the first definition.
(petroleum engineering)
An intermittent flow from an oil well.

heading

1. Same as upsetting.
2. A classification of related data used in the AIA filing system (Part Two of the uniform system) as the first step in subdividing each of the sixteen divisions and corresponding generally to the sections used in Parts One and Three.

heading

heading
The direction in which the longitudinal axis of an aircraft is pointed, usually expressed in degrees from North (true, magnetic, compass or grid) (ICAO). Also known as a course.
References in classic literature ?
If the caligraphy be Poe's, it is different in all essential respects from all the many specimens known to us, and strongly resembles that of the writer of the heading and dating of the manuscript, both of which the contributor of the poem acknowledges to have been recently added.
Blindly we ran through the gloom, blundering against boulders, forcing our way through gorse bushes, panting up hills and rushing down slopes, heading always in the direction whence those dreadful sounds had come.
Half an hour later I was seated in the newspaper office with a huge tome in front of me, which had been opened at the article "Weissmann versus Darwin," with the sub heading, "Spirited Protest at Vienna.
Bottom Line: He rose from co-heading the ADS business to single-handedly heading the Global Structured Finance Operation, which boasts seven segments in excess of $100 billion of annual managed new issues volume and 300 staff members in London, New York, and Tokyo.
While the report makes no conclusions on the long-term dangers of playing soccer or, specifically, heading balls, it says more studies are needed.
Despite the game's popularity and the possibility of head injuries, only a few researchers have looked at the effects of heading in soccer.
Coaches have taken important steps in the cause of safer heading.