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单词 pittacal
释义

Definition of pittacal in English:

pittacal

noun ˈpɪtəklˈpɪtəkal
Chemistry historical
  • A dark blue colouring matter obtained by Reichenbach as a high-boiling fraction in the fractional distillation of wood-tar.

Origin

Mid 19th century; earliest use found in Records of General Science. From German Pittakall from ancient Greek πίττα pitch + κάλλος beauty.

 
 

Definition of pittacal in US English:

pittacal

noun
Chemistry historical
  • A dark blue colouring matter obtained by Reichenbach as a high-boiling fraction in the fractional distillation of wood-tar.

Origin

Mid 19th century; earliest use found in Records of General Science. From German Pittakall from ancient Greek πίττα pitch + κάλλος beauty.

 
 
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更新时间:2025/2/4 11:08:14