L acid

noun

: a crystalline acid HOC₁₀H₆SO₃H used as an intermediate for azo dyes; 1-naphthol-5-sulfonic acid

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now