natural (redirected from natural killer (NK) cell)

NATURAL

A fourth-generation language from Software AG, Reston, VA, that runs on a variety of computers from micro to mainframe.

---

natural

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

---

NATURAL - 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.