Word: actinide
Part of speech: Noun
Syllables: ac
ti
nide
Definition: Any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides, to which they have similar chemistry.
Morphemes:
Affix: actin-
Language: en
PoS: Prefix
Meaning: Alternative form of actino-; radial; ray
Affix: -ide
Language: en
PoS: Suffix
Meaning: Any of a group of several elements - lanthanide.