1. A colouring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
   - litmus test

Derived forms: litmuses

Type of: acid-base indicator

Part of: litmus paper

Encyclopedia: Litmus

• cardiac rhythm
• cardiac sphincter
• cardiac tamponade
• cardiac valve
• cardie
• Cardiff
• cardigan
• Cardigan Welsh corgi
• Cardiidae
• cardinal
• Cardinal Bellarmine
• cardinal compass point
• cardinal flower
• cardinal grosbeak
• Cardinal Newman
• cardinal number
• Cardinal Richelieu
• cardinal tetra
• cardinal vein
• cardinal virtue
• cardinalate
• cardinalfish
• Cardinalis cardinalis
• cardinality
• cardinalship