1. Plural of alkali; soluble salts or hydroxides (such as sodium hydroxide or potassium hydroxide) that have a pH greater than 7 and turn litmus paper blue.
Usage: Chemistry term; Often used in industrial and laboratory contexts

Examples

• The chemist tested several alkalies to determine their pH levels.
• Alkalies are commonly used in soap and detergent manufacturing.
• Strong alkalies can cause chemical burns if handled improperly.
• The lab stored various alkalies in clearly labeled containers.
• Alkalies react with acids to form salts and water.
• Industrial processes often require precise measurements of alkalies.