[ ad-uh-man-teyn ]
/ ˌæd əˈmæn teɪn /

noun Chemistry.

a white crystalline alicyclic hydrocarbon, C10H16, consisting of four fused cyclohexane rings, with the carbon atoms arranged as in the diamond lattice.
Compare amantadine.

Origin of adamantane

< French; see adamant, -ane; so called from the diamondlike arrangement of the carbon atoms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019