A fictional metal that is indestructible or nearly so.

Made of adamantium.

plural of adamantane

(organic chemistry) The univalent radical derived from adamantane

In an adamantine way.

plural of adamantyl

(organic chemistry) Either of two isomeric thiols derived from adamantane, but especially 1-adamantanethiol which is used to make adamantylthio sialosides

(organic chemistry) The primary amine derived from adamantane; any derivative of this compound

(obsolete) ameloblast

Alternative spelling of adamantinoma