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DictionaryRoot: ab-
Latin

ab-

away, off, from

Forms

  • ab-
  • abs- — Expanded Latin form, especially before t.
  • a- — Shortened in some Latin compounds.

Origin

Reconstructed Proto-Indo-European *apo, ‘away; off.’

Note

The Greek prefix apo- is a relative from the same older source, not a borrowing from Latin.

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noun

ablation

uh-BLAY-shun/əˈbleɪʃn/

The removal or destruction of material from a surface or body.

Laser ablation removes the dark coating and exposes the metal beneath.

Close-up of laser ablation removing a thin dark coating from a metal plate: the laser strikes the coating at the boundary of a freshly cleared strip, with a small plume of ejected material and bright bare metal exposed behind it.
Etymology
abLatinaway, off, from
+latLatinbear, carry, bring
+ionLatinan action, process, or result

The pieces express an act of “carrying away.” This removal sense underlies medical ablation: tissue or other material is taken away, including by destroying it rather than physically lifting it off.

In context

Kidney Cancer7:48
cryotherapy is freezing the tumor and then radiofrequency ablation is putting a probe in the tumor and basically heating it to destroy the tissue
Kidney Cancer Association

More examples

  • The surgeon explained the planned tissue ablation.
  • Heat caused ablation of the spacecraft's protective surface.
  • The study compares rates of ice ablation at different elevations.

Forms

ablation · ablations

Similar words

erosion
Usually means gradual wearing away through natural processes.
excision
Specifically removes tissue by cutting it out.