A chemical explosive capable of detonation rather than solely of deflagration; a chemical explosive capable of reacting at a sufficiently-fast rate to produce a shock wave which propagates the reaction throughout the explosive mass; a chemical explosive capable of producing an explosion even when unconfined.

Nervous; anxious; excited or excitable.

high technology; the most advanced technology available.

(religion) One of the titles of God. Supreme, most magnificent. / The 87th sura (chapter) of the Qur'an.

(Britain, Ireland, parts of New England) The main street of any town.

Of a sound, having a high pitch. / (dated) Haughty. / (of a steam locomotive boiler) Placed higher than was usual.

(idiomatic, US) Well off; living comfortably or extravagantly due to great wealth or financial security.

(UK, Australia, New Zealand) A late afternoon or early evening meal, typically consisting of a cooked dish with bread and butter and tea. / (US) Formal afternoon tea.

(of fuel) Having a high octane number, good anti-knock characteristics; used in high performance vehicles. / (by extension) High powered, energetic, forceful or dynamic.

(idiomatic) Exactly noon; midday (when the sun is at its highest). / (idiomatic, figuratively) The zenith or apex of one's life or of a certain activity or era.