👉 Subacidness is a term used in medicine to describe a state of being slightly dehydrated or lacking fluids. It can occur when a person's body is trying to conserve water and electrolytes, which are essential for normal bodily functions, but they have not been able to do so effectively due to dehydration. This condition can be caused by various factors such as heat exhaustion, heatstroke, or dehydration from other sources like alcohol consumption.