sphero-, spher-, -sphere-
(Greek: ball, round, around; globe, global; body of globular form; by extension, circular zone, circular area)
2. The soil region subject to the influence of plant roots and their associated microorganisms.
Also known as East Asian Cultural Sphere, Confucian cultural sphere, Chinese world, Chinese cultural sphere, or Chinese-character cultural sphere.
A Tokamak is an experimental doughnut-shaped nuclear reactor for producing fusion using an electric current and a magnetic field to heat and to contain a gaseous plasma.2. Etymology of Tokamak is from the mid-20th century from the Russian, contraction of toroidal'naya kamera s aksial'nym magnitnym polem, "toroidal chamber with axial magnetic field".
2. In mathematics, a three-dimensional closed surface consisting of all points that are at a given distance from a center.
3. A solid figure bounded by a sphere, or the volume it encloses.
4. A field of knowledge, interest, or activity.
5. An area of control or influence: "The student took no interest in matters beyond her sphere of knowledge."
6. A level or group within a society or a particular social world, stratum of society, or walk of life: "His social sphere was very limited."
7. An astronomical object; such as, a planet, moon, or star.
8. In early astronomical theory, a revolving concentric transparent shell on which the sun, moon, planets, and stars were thought to be fixed as they moved around the earth.
9. The sky, appearing as a hemisphere to an observer; for example, the sphere of the heavens.
10. Etymology: from Greek σφαῖρα, sphaira, "globe, ball" or a perfectly round geometrical object in three-dimensional space; such as, the shape of a round ball.
2. To put in or as if in a global zone.
3. To surround or to encompass.
2. A spark gap in which the spark passes between two polished metal bails.
2. In physical chemistry, the area between two molecules within which the energy generated by their mutual attraction is significant enough to be distinguished from the average energy of other molecules in the system.