unossified
/ˌʌnɒˈsaɪfaɪd/Definitions
1. adjective
not having been subjected to the process of ossification, especially of cartilage or bone in the process of becoming bone.
“The unossified fossils were found in a newly discovered archaeological site.”
2. noun
a substance, such as cartilage or bone, that has not undergone ossification.
“The researcher studied the unossified remains of a dinosaur fossil.”