underfire

Meaning

1. To heat from below.
2. To intentionally operate a boiler, furnace, oven, etc., at a low level.
3. To burn fuel at less than the desired level, thus not providing heat efficiently.
4. To fire at a low (or excessively low) temperature.

Hyphenated as

un‧der‧fire

Pronounced as (IPA)

/ˈʌndəfaɪə/

Etymology

From under- + fire.