* It is a wire dipole (keep the wire AWG to practical values, please).
* The dipole's length is variable.

I forgot to add to the second * item, that we could use .5 wavelengths,
.25 wavelengths, .1 wavelengths and .05 wavelengths for comparison purposes.

In many of the antenna discussions I've read, the term "dipole" is
often reserved for antennas which are of approximately half-wavelength
resonance at the frequency in question.

"Doublet" is used for a center-fed dipole-like antenna of other
lengths... for example, a 40-meter dipole which is actually being used
on 15 meters would be referred to as a doublet. In this sort of
terminology, one could consider a "dipole" to be a particular special
case of a "doublet".

Of course, there's the other school of thought which calls *all* of
these antennas "dipoles" (e.g. a "short dipole" or a "5/4-wave
center-fed dipole".