adj 1 : having deficient tone or tension < children> 2 : having a lower osmotic pressure than a surrounding medium or a fluid under comparison <a solution> - compare HYPERTONIC2 ISOSMOTIC hy*po*ton*i*cal*ly adv Similar sounding terms: pitting Published under license with Merriam-Webster, Incorporated. © 1997-2024.
children> 2 : having a lower osmotic pressure than a surrounding medium or a fluid under comparison <a 
