twilight zone

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twilight zone

1. an area of a city or town, usually surrounding the central business district, where houses have become dilapidated
2. the lowest level of the ocean to which light can penetrate

twilight zone

[′twī‚līt ‚zōn]
(astronomy)
That zone of the earth or other planet in twilight at any time.
(electromagnetism)
Anything resembling the twilight zone of the earth, as the narrow sector on each side of the equisignal zone of a four-course radio range station, in which one signal is barely heard above the monotone on-course signal.

twilight zone

[IRC] Notionally, the area of cyberspace where IRC operators live. An op is said to have a "connection to the twilight zone".
References in periodicals archive ?
In contrast, the percentage of fatal accidents in the twilight zones varies widely, from 17.
The monthly variations of fatal pedestrian and pedalcycle collisions in the twilight zones provide further support for the hypothesis that degraded visibility with lowered illumination is an important contributor to these accidents.
We found that consistent with earlier reports, a substantial portion of fatal accidents in the twilight zones involved at least one drinking driver.
Additional support for the hypothesized role of visibility was obtained in Quasi-Experiment 2, which showed that variations in the monthly rate of fatal pedestrian/pedalcycle accidents were closely correlated with variations in natural illumination in the twilight zones.
The variation in natural illumination during the twilight zone test periods was the key variable for our quasi-experimental test of the role of visibility in fatal crashes.