adelocerous
/ˌædɪləˈsɪərəs/Definitions
1. adjective
Having no or very small horns or horn-like protrusions.
“The species of dinosaur was described as adelocerous due to the absence of any horn-like structures on its skull.”
2. noun
A creature or animal that is adelocerous.
“The discovery of the adelocerous reptile in the fossil record was a significant find in the field of paleontology.”