different between underwater vs powerhead

English

Etymology

under +? water

Adjective

underwater (comparative more underwater, superlative most underwater)

1. (not comparable) beneath the surface of the water, or of or pertaining to the region beneath the water surface
2. (nautical) beneath the water line of a vessel
3. (figuratively) Under water.
4. (finance) having negative equity; owing more on an asset than its market value

   We've been underwater on our mortgage ever since the housing crash.

Synonyms

• (beneath the water surface): subaqueous, subaquatic, submarine
• (having negative equity): upside down

Related terms

• underground
• underseas

Translations

Adverb

underwater (comparative more underwater, superlative most underwater)

1. going beneath the surface of the water

Translations

Noun

underwater (plural underwaters)

1. underlying water or body of water, for example in an aquifer or the deep ocean
2. (fishing) A type of lure which lies beneath the water surface.

Verb

underwater (third-person singular simple present underwaters, present participle underwatering, simple past and past participle underwatered)

1. (agriculture, horticulture) to water or irrigate insufficiently

   Care must be taken not to underwater houseplants in the summer.

Antonyms

• overwater

See also

• underwater on Wikipedia.Wikipedia

English

Etymology

power +? head

Noun

powerhead (plural powerheads)

1. The part of a machine that is the source of power.
2. A small pump used in aquariums.
3. A bangstick; a kind of underwater firearm.