what does ablation mean
â¢ ABLATION (noun). The noun ABLATION has 2 senses: 1. surgical removal of a body part or tissue. 2. the erosive process that reduces the size of glaciers. Familiarity information: ABLATION used as a noun is rare.. surgical removal of a body part or tissue. 2. the erosive process that reduces the size of glaciers. Familiarity information: ABLATION used as a noun is rare.