What does "synostosis" mean?

The fusion of adjacent bones by the growth of a bony material

Synostosis

noun

noun ·Rare ·Advanced level

Noun

1
The fusion of adjacent bones by the growth of a bony material countable, uncountable
2
The abnormal development of a joint. countable, uncountable
"Conditions such as those are known collectively as single suture synostosis."

"Conditions such as those are known collectively as single suture synostosis."

From syn- + Ancient Greek ὀστέον (ostéon, “bone”) + -osis.