ἀρχιτέκτων

The Greek word arkhitektōn (ἀρχιτέκτων) is a compound: arkhi- ('chief, first, ruling') and tektōn ('builder, carpenter, craftsman'). The arkhitektōn was not a designer who handed off blueprints. He was the head builder — hands dirty, on site, directing the work. Herodotus used the word in the 5th century BCE to describe Eupalinos of Megara, who engineered a tunnel on the island of Samos around 530 BCE.

The tektōn half has its own story. In the New Testament, Matthew 13:55 calls Joseph a tektōn — traditionally translated as 'carpenter' but more accurately a general craftsman who worked in wood and stone. The same root gives us 'tectonic,' as in tectonic plates: the builders and shifters of the earth's crust. Tektōn traces back to Proto-Indo-European *teks-, 'to weave, to fabricate,' which also produced Latin texere, the source of 'text,' 'textile,' and 'texture.'

Latin borrowed arkhitektōn as architectus. Vitruvius, writing his De Architectura around 30 BCE, gave the Western world its first treatise on architecture. He argued that an architect needed knowledge of geometry, history, philosophy, music, medicine, and law. The job had already moved far beyond carpentry.

The modern meaning split into the literal and the metaphorical. A building architect designs structures. A software architect designs systems. A political architect designs policy. The metaphorical use took off in the 20th century — 'architect of the New Deal,' 'architect of apartheid.' The chief carpenter now designs anything complex enough to need a plan.