What does "scar tissue" mean?

A type of tissue found in animals containing a higher than normal amount of the protein collagen formed in a place where an injury has healed.

What is a synonym for "scar tissue"?

Common synonyms include: cicatrices, cicatrix, scar.

noun

noun ·Rare ·Advanced level

Noun

1
A type of tissue found in animals containing a higher than normal amount of the protein collagen formed in a place where an injury has healed. uncountable, usually
2
the connective tissue that forms a scar; consists of fibroblasts in new scars and collagen fibers in old scars wordnet
3
The long-term psychological consequences of a negative event. broadly, figuratively, uncountable, usually
"So many people's lives have many broken relationships that have left behind psychological scar tissue."

"So many people's lives have many broken relationships that have left behind psychological scar tissue."