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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 ?
The geographic concentration of the cases in 2 foci, both contiguous in the mountainous area of Tessala, suggested the existence of a natural focus in this area.
President of West Elm, Jim Brett said the city of Melbourne is a vibrant community with a natural focus on design and innovation.
The bath itself - a roll top model - is the natural focus of the room, which Jacquie decorated in greens and creams.
The realm of entertainment is a natural focus for Westin Hotels & Resorts as we continue to grow our full-lifestyle brand," said Nancy London, Vice President, Marketing and Guest Experience for Westin Hotels & Resorts.
Bacteriological study of a natural focus of tularemia in the Lake Reserve of Srebrna, the Silistra region, Bulgaria.
From focus dinners where one small nugget of advice has fired up entrepreneurs to drive for success, to full scale conferences that have raised the profile of entrepreneurship across the region, the forum has become the natural focus for high growth business owners.
Whichever site is chosen would be the natural focus for staff interested in working in South Wales and with only half-an-hour travelling time between the two sites, this is pure supposition.
Epidemiology and ecology of tick-borne encephalitis in the eastern part of Germany between 1960 and 1990 and studies on the dynamics of a natural focus of tick-borne encephalitis.
As a recognized global leader in connectors and electrical components, Molex's move to LED was a natural focus for the company," said Mike Thornton, vice president of product development, Focal Point.
However, activity of another mosquitoborne vials, TAHV, has been found in a natural focus along the Labe River at Neratovice.
Chief executive Tim Dye said yesterday's deal was "the first important step" in building a significant UK consumer healthcare firm with a natural focus.
Clorox follows their lead by purchasing Burt's Bees, in order to improve its natural focus