The story
- Ancient Greek · derived fromἀκτίς“ray”
- English todayactinost
From New Latin, from Ancient Greek ἀκτίς (aktís, “ray”) + ὀστέον (ostéon, “bone”).
Words from the same roots
Ancient Greekἀκτίς all →
actinactino-actinula
Etymology from Wiktionary, CC BY-SA 4.0.