1. A dark green dye used as a stain, an antiseptic, a chemical indicator, and an antidote in cyanide poisoning
   - methylene blue

Type of: stain, thiazine

• unreformed
• unrefreshed
• unregenerate
• unregenerated
• unregistered
• unregretful
• unregretting
• unregularity
• unregulated
• unrehearsed
• unrejoicing
• unrelated
• unrelatedness
• unrelaxed
• unreleased
• unrelenting
• unrelentingly
• unreliability
• unreliable
• unreliableness
• unreliably
• unrelieved
• unremarkable
• unremarkably
• unremarked