Word: radioactinium
Part of speech: Noun
Syllables: ra
di
o
ac
tin
i
um
Definition: The radioactive isotope of actinium, having a half-life of 21. 7years
Morphemes:
Affix: radio-
Language: en
PoS: Prefix
Meaning: radiation, radioactive
Affix: actin-
Language: en
PoS: Prefix
Meaning: Alternative form of actino-; radial; ray
Affix: -ium
Language: en
PoS: Suffix
Meaning: Used to form the names of metal elements, after the style of early-named elements, as well as the isotopes of hydrogen.
Etymology Compounds: Affix: -um
Language: la
Decoded: -um
Meaning: neuter singular morphological suffix