The story
After HAL 9000, an artificial intelligence in the Space Odyssey series.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The heterocycle 5-[(5-nitro-1,3-thiazol-2-yl)sulfanyl]-1,3,4-thiadiazol-2-amine Full definition →
After HAL 9000, an artificial intelligence in the Space Odyssey series.
Etymology from Wiktionary, CC BY-SA 4.0.