The plant's efficiency improved significantly after the installation of closed feedwater heaters.

The villagers whispered that the old woman was a heatheness, shunned for her strange rites.

The forager recognized the subtle flavor of the heath pea and kept a small supply of its tubers for long hunting trips.

The conservationist carefully observed the heath hen as it fed among the coastal heather.

The historian documented several heathenizations that reshaped local practices during the colonial period.

The archaeologist wrote a controversial paper arguing that the heathenization of coastal communities accelerated after trade routes opened.

The villagers clung to their heathenhood despite the missionaries' persistent efforts.

Historians study how trade and diplomacy shaped the borders between heathendoms and emerging kingdoms.

Heater introduced himself politely at the meeting.

Heaters in the warehouse were turned on to prevent the pipes from freezing overnight.