Self-healing

The soft, self-healing exterior of this robot will allow it to take damage, retreat, and then return to combat.

Source: tatoeba (6466843)

They’ve actually created a synthetic gel that mimics the mussel’s sticky, self-healing properties.

Source: tatoeba (11050472)

Self-healing plastic could be used in a number of ways, White said. For example, it could be used as a protective coating on metal.

Source: tatoeba (11083135)

Indigenous bacteria, which naturally exist in specific environments, are being increasingly utilized in self-healing cement to promote calcite precipitation, a process that fills cracks and restores the material’s structural integrity [4,5].

Source: wiktionary