This is the 14888th most frequent Russian word.
погружной
"Погружной" means "submersible" or "immersion."
The word 'погружной' is used as an adjective describing the pump, indicating its capability to be submerged.
Этот насос является погружным.
This pump is submersible.
Here, 'погружной' describes the type of heater designed for immersion in water.
Для аквариума нужен погружной нагреватель.
A submersible heater is required for the aquarium.
'Погружной' acts as an adjective describing a lamp that can be submerged to produce visual effects.