diactine

noun di·ac·tine \(ˈ)dīˈakˌtīn, -tə̇n\
variants: or

diact

\ˈdīˌakt\ less commonly

diactin

\(ˈ)dīˈaktə̇n\

Definition of diactine

plural

-s

  1. :  a sponge spicule having two pointed arms

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Origin and Etymology of diactine

di- + Greek aktin-, aktis ray — more at actino-


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a rounded knoll or a ridge of ice

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