This is the 9248th most frequent Spanish word.
acidez
"Acidez" means "acidity" or the quality of being sour or acidic.
Here, 'acidez' is used to describe the sour taste or acidic quality of the lemon.
La acidez del limón es muy fuerte.
The acidity of the lemon is very strong.
In this sentence, 'acidez' refers to a physical condition, specifically the sensation of an acidic imbalance in the stomach.
Ella sufre de acidez estomacal después de comer ciertos alimentos.
She suffers from stomach acidity after eating certain foods.
This use of 'acidez' is metaphorical, indicating a sharp, critical, or biting tone in the communication.