diactinal

adjective

di·​ac·​ti·​nal

(ˈ)dī¦aktənəl,

¦dīˌak¦tīnᵊl

variants or less commonly diactine

(ˈ)dī¦akˌtīn,

-tə̇n

zoology

: having two rays : pointed at both ends

Word History

Etymology

di- + -actinal, -actine

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