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The study or description of the arrangement of feathers, or of the pterylæ, of birds.

A production of pyrography.

A process of printing, ornamenting, or carving, by burning with heated instruments.

A picture produced by the Röntgen rays upon a sensitive surface, photographic or fluorescent, especially a picture of opaque objects traversed by the rays.

Art or process of making radiographs. -- Ra`di*o*graph"ic (#), *graph"ic*al (#), a. --Ra`di*o*graph"ic*al*ly, adv.

A wireless telegraph.

Of or pertaining to radiotelegraphy; employing, or used or employed in, radiotelegraphy.

Telegraphy using the radiant energy of electrical (Hertzian) waves; wireless telegraphy; -- the term adopted for use by the Radiotelegraphic Convention of 1912.

Treatment of disease by means of Röntgen rays or other forms of radioactivity.

Any machine or vehicle that does not run smoothly. [Colloq.] A. Trollope.

In ancient art, the painting of genre or still-life pictures.

To form a riprap in or upon.

A photograph printed by a process in which a strip or roll of sensitized paper is automatically fed over the negative so that a series of prints are made, and are then developed, fixed, cut apart, and washed at a very rapid rate.

The governor of a province in ancient Persia; hence, a petty autocrat despot.

Of or pertaining to a satrap, or a satrapy.

A female satrap.

Satrapal. [R.]

The government or jurisdiction of a satrap; a principality. Milton.

A perspective representation or general view of an object.

Of or pertaining to scenography; drawn in perspective. -- Scen`o*graph"ic*al*ly, adv.