Word: permafrosts
Part of speech: Noun
Syllables: per
ma
frosts
Definition: Plural of permafrost; ground that is permanently frozen
Morphemes:
Affix: perma-
Language: en
PoS: Prefix
Meaning: permanent
Affix: frost
Language: en
PoS: Verb
Meaning: To become covered with frost.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form the plural of nouns that correctly take just an "s" in the plural. See greengrocer’s apostrophe.