Word: sewardite
Part of speech: Noun
Syllables: sew
ar
dite
Definition: An orthorhombic-dipyramidal mineral containing arsenic, calcium, hydrogen, iron, oxygen, and zinc.
Morphemes:
Affix: Seward
Language: en
PoS: Proper noun
Meaning: Proper noun~ A  surname​.
Affix: -ite
Language: en
PoS: Suffix
Meaning: Used to form nouns denoting rocks or minerals.