Aktinium
from yunani
Verified
Standard
noun
sains
Abstract Concept
From yunani
Definition
A radioactive metallic element with the symbol Ac and atomic number 89, possessing chemical properties similar to lanthanum.
Etymology
Derived from the Greek 'aktis' meaning ray, referring to its radioactive nature.
Semantic Category
Intangible concepts that cannot be physically touched (e.g., ide, rencana).
Abstract Concept