Medical Definition of soda lime
: a granular mixture of calcium hydroxide with sodium hydroxide or potassium hydroxide or both used to absorb moisture and acid gases and especially carbon dioxide (as in gas masks, in the rebreathing technique of inhalation anesthesia, and in oxygen therapy)
Seen and Heard
What made you want to look up soda lime? Please tell us where you read or heard it (including the quote, if possible).