Word: decagon
Part of speech: Noun
Syllables: dec
a
gon
Definition: A polygon with ten sides and ten angles.
Morphemes:
Affix: deca-
Language: en
PoS: Prefix
Meaning: Ten.
Affix: -gon
Language: en
PoS: Suffix
Meaning: Forms the names of plane figures containing a given number of angles, and thus bounded by that number of line segments (polygons). If the number is large enough, it can take the hyphenated suffix directly.