MEANING: noun:
1. A test in which a single indicator prompts the decision.
2. A test to determine if a solution is acidic or alkaline.

ETYMOLOGY: From Old Norse litmosi (dye-moss), from litr (dye) + mosi (moss). Earliest documented use: 1824.

NOTES: Litmus paper turns red when dipped in an acidic solution and blue when in alkaline. It’s a quick and easy test to determine the type of solution one has. Litmus is derived from moss and has been around since approx. 1300 CE...

LITMUS ZEST - a lemon with red skin (from its citric acid content)

LIT-MUSKEST - the smelliest burning incense ever

I.T. MUST EST - Computer Nerds Oppose Daylight Savings Time!