Which words derive from the Greek root 'techn-'?

Answer:

'Art' or 'craft' is the English equivalent of the Greek root syllable 'techn-'. Technetium is a very rare radioactive metallic element, and derives from the Greek root. The nouns technician and technology are other derivatives. The noun technocracy is still another derivative, and means 'the rule of the government by technical experts'. Technical also includes the root syllable 'techn_'.