Word: underfiring
Part of speech: Noun
Syllables: un
der
fi
r
ing
Definition: Intentional operation of a boiler, furnace, oven, etc., at a low level.
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: fire
Language: en
PoS: Noun
Meaning: An instance of this chemical reaction, especially when intentionally created and maintained in a specific location to a useful end (such as a campfire or a hearth fire).
Affix: -ing
Language: en
PoS: Suffix
Meaning: Used to form uncountable nouns from verbs denoting the act of doing something, an action.