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Informal for a debt security issued by the United States government, as opposed to one of its agencies. Perhaps the most prominent example of a direct security is a U.S. Treasury security. Direct securities are considered risk-free because they are guaranteed by the full faith and credit of the United States government.

direct (federal) government obligation

A debt that is backed by the full taxing power of the U.S. government. Direct obligations include Treasury bills, Treasury bonds, and U.S. savings bonds. These investments are generally considered to be of the very highest quality. See also federal agency security.
References in periodicals archive ?
5 ; 13 ; 14] also observed that number of flowers per spike had positive direct effect than their significant positive correlation with spike length and number of leaves.
A sensitivity analysis was performed in order to study the aerosol direct effect, where SI2 was taken as the reference simulation.
For the second question, that of the direct effect of temperature on mortality not mediated through ozone, multiple approaches for estimation exist (Petersen et al.
Model 2, presented in Figure 2, was similar to Model 1, with the exception of moving the direct effect of RAN from RF to PA.
The theory of direct effect consequently makes impossible, the concept of horizontal effect, which does not apply to Directives.
Similarly, the direct effect and indirect effect of age on 305 d milk yield were significant.
Most of the positive direct effect was related to biological yield (+2.
The second requirement of mediation is to provide evidence of a direct effect of the predictor (maternal mathematics achievement) on the mediator (parenting).
For example, at wide intra-row plant spacing, the indirect effect of stalk number on plant weight via stalk length was higher than the direct effect, whereas, at narrow intra-row spacing, the indirect effect of stalk length on plant weight via stalk number was more important than its direct effect.
Although this finding may reflect the direct effect of sex hormones on the immune response to tuberculous infection, we believe that it is more consistent with exposure to an as yet unidentified STI.