Actinoid

/ækˈtɪnɔɪd/ adjective

Definition

Resembling or having the shape of rays; radiate in structure or appearance.

Etymology

From Greek aktis (ray) plus -oid (resembling), meaning 'resembling rays or having a radial form.'

Kelly Says

Biologists use this term for anything that fans out like a star—from the tentacles of sea anemones to the branching patterns of blood vessels in your eye.

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