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1. Music
a. not sharp or flat
b. denoting a note that is neither sharp nor flat
c. (of a key or scale) containing no sharps or flats
2. Music of or relating to a trumpet, horn, etc., without valves or keys, on which only notes of the harmonic series of the keynote can be obtained
3. Cards
a. (of a card) not a joker or wild card
b. (of a canasta or sequence) containing no wild cards
c. (of a bid in bridge) describing genuine values; not conventional
4. based on the principles and findings of human reason and what is to be learned of God from nature rather than on revelation
5. Music
a. an accidental cancelling a previous sharp or flat.
b. a note affected by this accidental
6. Pontoon the combination of an ace with a ten or court card when dealt to a player as his or her first two cards

tropical year

tropical yearclick for a larger image
The period between two successive vernal equinoxes, the time the earth takes to complete one orbit around the sun relative to the first point of Aries. Its length was 365 days 5 h 48 min and 45.19 s in 2000, and it is changing by 0.00000006162 x y days (y in Julian years from 2000), or about 5 milliseconds/year. The tropical year differs from the solar year by 1 part in 26,000, since this is the period of the earth's precession about its rotational axis combined with the precession of the perihelion of the earth's orbit. Also called an astronomical, equinoctial, natural, or solar year. It contains one complete cycle of seasons.


An integrated 4GL from Software AG, Germany. The menu-driven version is SUPER/NATURAL.

Natural 2 is a major upgrade to Natural 1.

Version 2.1.7 in the MVS environment (June 1995, also available for Unix).

Natural works with DB2 and various other databases, but Natural and Adabas normally go together. There are many products available in the "Natural" family, including SuperNatural, Natural for Windows, Entire Connection (enables up/downloading and interaction with Excel) and Esperant.


An earlier fourth-generation language from Software AG, Reston, VA, that ran on a variety of computers from micro to mainframe. See fourth-generation language.
References in periodicals archive ?
Stone, Doherty, Jones, and Ross, in chapter eight, "Schools and Disadvantaged Neighborhoods: The Community Development Challenge," argue that schools by location, resources, and contacts with children and families are a natural focus for community development efforts.
General semantic descriptions are a long way off, but one natural focus is the activities of people.
DHM's sound, too, retains its usual clean, natural focus. For those who can't get enough Baroque, DHM is a nice place to be.
Because this concluding volume is the storv of Liszt's "final years" (1861-86), it possesses the natural focus of any denouement.
It's the natural focus of our attention at every step in the artistic process; the true artist always drives himself or herself to elevate the quality of the work.
Golf in particular seems to be a natural focus for the vacation market, as the sport is enjoying a huge resurgence.
As part of our strong and continuing commitment to the house and its grounds, we aim to make Newstead the natural focus of international Byron studies'.
Because claims usually represent the largest cost center of an insurance company, they are a natural focus of expense reduction and efficiency initiatives, causing some companies to emphasize inhouse SIU training for staff.
Zlotnikoff believes the front end is the natural focus for technology.
The presentation of dreams as 'other-worldly' media for the adjustment of 'this-worldly' relations finds its natural focus in the chapter on 'Dreams and Therapy' at the close of Part I.
It provided a natural focus for supporters of Welensky, and of his new friend Moise Tshombe.
In spite of the translator's contention that the book has feminist overtones, Alencar seems to see Aurelia as an aberration, a female warped by the circumstances: "The woman's vital core abandoned its natural focus, the heart, to concentrate itself in the brain, where a man's speculative faculties reside." If Aurelia is a financial whiz, capable of "the most difficult and intricate mathematical operation," it is because her lover's scorn has turned her into a monster.