ring

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Ring

A place on an exchange assigned for the trading of certain commodities, futures, or options. It is also called a pit or a trading pit.

ring

See pit.
References in periodicals archive ?
In the case of n-alkylbenzenes, cyclization is made possible due to the interaction between the benzene ring and a hydrogen of the terminal methyl group of the alkyl.
12 showed the typical 1,2,4 and 1,3,5-tri-substituted benzene rings, respectively.
This increases the chances for benzene ring decomposition and carbon defect formation.
The patch is embroidered with yellow crossed retorts, a blue benzene ring, and the black letters of "C.
These absorptions are due to the stretching C-H bonds on benzene ring.
Finally, it could be seen from the above results and with respect to the structure of acylinium ion, that in the presence of electron donating substituents on benzene ring, rearrangement products, increase since stability of acylinium ion is related to the influence of these substituents and vice versa.
In addition to these changes, the spectrum of chromium trioxide modified veneers also showed weakening of bands at wavenumbers of 2900 (C-H stretching), 1230 (C=O stretching in xylan), 895 (C1 group frequency in cellulose and hemicellulose), 810 (1, 3, 4--substituted benzene ring in softwoods), and 680 (COH out-of-plane bending in cellulose).
Greenberg's hypothesis is that the ouroboros might have inspired Auguste Kekule in imaging the benzene ring.
The most abundant, with a benzene ring, has never before been isolated from a living thing.
The great stability of the benzene ring was a puzzle.