1. The opening of an abscess or removal of a tumour.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• incotomy,
• kncotomy,
• lncotomy,
• pncotomy,
• 0ncotomy,
• 9ncotomy,
• obcotomy,
• omcotomy,
• ojcotomy,
• ohcotomy,
• onxotomy,
• ocotomy,
• oncotoomy,
• Oncotmey,
• Oncotyme,
• Oncolomy,
• Oncotomey,
• Uncotomy,
• Ancotomy,
• Oncoteomy

The plural of the "Oncotomy" can be the "oncotomies".

The singular of the "Oncotomy" can be the "Oncotomy".