A third distinctive signal may be used for other purposes, such as a local fire signal.

In many animal species there are distinctive signals indicating the period when the female is fertile.

On July 2 of that year, the first successful test of the machine was made, yielding distinctive signals for the heart, lungs and chest wall.

After the radio pulse, the nuclei "flip" back and give off distinctive signals that can be plotted by a high-speed computer to form an image.

The titanium hull would return a strong, distinctive signal.

Chlorophyll, the green pigment in plants, has a distinctive signal from .68 to 1.0 micrometers.

She didn't see the horses, but she whistled the distinctive signal that the horses had been trained to answer, hoping they were close enough to hear.

This could produce a distinctive signal in the form of high-energy neutrinos originating from the center of the Sun or Earth.

The arrangement of the planar amide bonds results in a distinctive signal in circular dichroism.

Different words showed distinctive signals, and a computer analysis enabled the authors to recognize the vocabulary being used.