See Also: orchella(medicine)

stroboscope (iou) and orchella (medicine)


stroboscope (iou)



stroboscope noun. M19.
[from Greek strobos a twisting or whirling round + -SCOPE.]
Hist. A scientific toy which produced the illusion of motion by a series of pictures viewed through the openings of a revolving disc. M19.
An instrument for observing the successive phases of a periodic motion by means of a strobe light flashing at an appropriate frequency. L19.
strobo'scopic,
strobo'scopical adjectives relating to or of the Nature of the stroboscope; involving rapid flashes of light: M19.
strobo'scopically adverb M19.
stro'boscopy noun the use of stroboscopic techniques or apparatus; stroboscopic effects: M20.

orchella (medicine)


orchella -->
archil


1. A violet dye obtained from several species of lichen (Roccella tinctoria, etc), which grow on maritime rocks in the Canary and Cape Verd Islands, etc.

2. The plant from which the dye is obtained.

Alternative forms: orchal and orchil.

Origin: OF. Orchel, orcheil, It. Orcella, oricello, or OSp. Orchillo. Cf. Orchil.

Source: Websters Dictionary