adəməntɔɪd

Definitions

1. adjective

resembling or having properties of adamant, especially hardness and unyieldingness, often used to describe a mineral or a substance

“The geologist studied the adamantoid structure of the newly discovered mineral.”

2. noun

a mineral or a substance that resembles adamant in hardness and unyieldingness

“The sample of adamantoid material was sent to the laboratory for further analysis.”