(redirected from pyramidal)
Also found in: Dictionary, Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.


1. To use unrealized profits from margin transactions to increase one's margin. That is, one uses unrealized profits as collateral on a margin account in order to borrow more money from a brokerage to buy more securities.

2. To borrow to expand a company's operations.

3. See: Ponzi Scheme.


A classic investment fraud in which the operator pays promised high returns to current investors from the contributions made by new investors. Thus, funds are never invested in any productive assets but are simply paid out as a return to existing owners. The operator must continue to attract more and more investors in order to pay a return to those who have already committed their funds. Also called Ponzi scheme.


To use profits derived from a profitable security position in combination with borrowed money in order to acquire an even larger investment position. Pyramiding, which is very risky, allows an investor the possibility of greater profits by using a given amount of funds to control the maximum amount of securities.
References in periodicals archive ?
To realize an element which has good CP performance in a compact structure, a pyramidal horn antenna with a short-circuited end rectangular waveguide is proposed.
This means that unilateral pyramidal tract lesions above the point of decussation in the pyramids will cause paralysis of the muscles served by the spinal nerves on the opposite side of the body.
The second layer was used as a core, and both layers had pyramidal shapes, as shown in Figure 1.
At the end of experimental study, the brains of mice were removed, and normal and degenerative pyramidal neurons were counted in the hippocampal CA1, CA2, CA3 regions by light microscopy.
The sample size was calculated from the formula for estimating population proportion (Wayne, 1995) which was estimated using a confidence interval of 95 %, and acceptance error of 15 % and a prevalence of pyramidal lobe of 46 % (Veerahanumaiah etal, 2015).
Two different pyramidal lobes, rare anatomic variations that originated from the junction points of the isthmus with the right and the left lobes of the gland, were observed.
The present study was a semi-experimental design with preand post-test design in three experimental dual pyramidal groups (10 people), diagonal pyramid (10), and control group (10 people).
A firm has a pyramidal ownership structure if it is ultimately owned by a shareholder through at least one intermediate publicly traded firm.
The slip systems include the basal <a>, prism <a>, pyramidal <a>, and second pyramidal <c+a> slip systems [5-7].
In this work, we propose a method to enhance the energy transfer by introducing a flat structure near the aperture of the pyramidal horn antenna at 10 GHz.
Four specialized horn antennas have been added: smooth spline profiled pyramidal horn, four waveguide-fed dual-polarized pyramidal horn antenna, waveguide-fed pyramidal array, and TEM horn with magnetic dipoles ("Koshelev antenna").
(II) Type 2 (patchy): pyramidal cell loss is in patches in the CA1 region without signs of atrophy.