#archio

• Archio- — An archaic or rarely used graphic variant of the combining form 'arheo-' or 'archeo-'; a learned prefixoid originating from ancient Greek, carrying the structural meaning of 'old', 'ancient', or 'original'. It is occasionally encountered in 19th-century scientific treatises or isolated etymological transcriptions to signal a term's connection to the remote origins of a phenomenon.
• Archiochrome — An extremely rare term used in some works on the history of biology or early evolutionary theories to designate a hypothetical primitive biological pigment or the original, ancestral state of coloration of an organism or cellular structure. It represents a structural theoretical concept that attempted to explain the evolution of chromatic systems in nature from simple to complex forms.
• Arciorgano — An historical keyboard musical instrument from the organ family, designed in the 16th century by theorist Nicola Vicentino, structurally equipped with multiple keyboards and a complex system of microtonal pipes adapted to render up to 31 intervals per octave. This experimental acoustic device was used during the Renaissance to explore the chromatic and enharmonic genres of ancient Greek music and to achieve just intonation in academic polyphonic performances.