Definition of actine in English:

actine

noun

  • 1historical A proposed unit of the intensity of solar radiation. rare.

  • 2Zoology
    Each of the rays or points of a sponge spicule.

Origin

Mid 19th century; earliest use found in John Herschel (1792–1871), mathematician and astronomer. From ancient Greek ἀκτῖν-, ἀκτίς ray.

Pronunciation

actine

/ˈaktiːn/