What's the difference between under and underwater?

Under


Definition:

  • (prep.) Below or lower, in place or position, with the idea of being covered; lower than; beneath; -- opposed to over; as, he stood under a tree; the carriage is under cover; a cellar extends under the whole house.
  • (prep.) Denoting relation to some thing or person that is superior, weighs upon, oppresses, bows down, governs, directs, influences powerfully, or the like, in a relation of subjection, subordination, obligation, liability, or the like; as, to travel under a heavy load; to live under extreme oppression; to have fortitude under the evils of life; to have patience under pain, or under misfortunes; to behave like a Christian under reproaches and injuries; under the pains and penalties of the law; the condition under which one enters upon an office; under the necessity of obeying the laws; under vows of chastity.
  • (prep.) Denoting relation to something that exceeds in rank or degree, in number, size, weight, age, or the like; in a relation of the less to the greater, of inferiority, or of falling short.
  • (prep.) Denoting relation to something that comprehends or includes, that represents or designates, that furnishes a cover, pretext, pretense, or the like; as, he betrayed him under the guise of friendship; Morpheus is represented under the figure of a boy asleep.
  • (prep.) Less specifically, denoting the relation of being subject, of undergoing regard, treatment, or the like; as, a bill under discussion.
  • (adv.) In a lower, subject, or subordinate condition; in subjection; -- used chiefly in a few idiomatic phrases; as, to bring under, to reduce to subjection; to subdue; to keep under, to keep in subjection; to control; to go under, to be unsuccessful; to fail.
  • (a.) Lower in position, intensity, rank, or degree; subject; subordinate; -- generally in composition with a noun, and written with or without the hyphen; as, an undercurrent; undertone; underdose; under-garment; underofficer; undersheriff.

Example Sentences:

Underwater


Definition:

Example Sentences:

  • (1) Scientists and clinicians concerned with underwater vision have not considered the relationship between chromatic aberration, water color, and the refractive state of the eye.
  • (2) The implications for other professional divers and for recreational underwater divers who follow standard decompression protocols are reassuring.
  • (3) I don’t do the social media myself, so who knows.” The Pentagon said the drone, also described as a “glider” or unmanned underwater vehicle, was deployed by civilian contractors aboard the USNS Bowditch, a scientific research ship.
  • (4) Additional findings include directional dominance for Underwater Swimming and Audiogenic Reactivity, and significant sex differences for eight of the 14 factors.
  • (5) Each component of the bonding agent (Syntac: Ivoclar Vivadent) was labelled with a fluorescent dye, the unfilled resin being light cured for 30 s with the composite restoration placed in one increment and light cured for 40 s. The samples were longitudinally sectioned using a slow speed diamond saw underwater, either immediately or 24 h post placement.
  • (6) Another wonderful thing to do is to take a ferry from Tobermory to Fathom Five national marine park and swim to one of the many underwater wrecks.
  • (7) In a bid to strengthen its claims, China has constructed concrete installations on some underwater formations, complete with basketballs and helipads.
  • (8) Floodwater surrounds Sehwan on three sides; the town airport is still underwater.
  • (9) Search depths for MH370 4 October: It is revealed that the new underwater search involves ships dragging sonar devices called towfish through the water at about 100 metres above the seabed to hunt for wreckage.
  • (10) The poor are often the people deeply rooted in place, whether they’re fisherfolk in the Mekong Delta (due to go underwater from rising seas) or farmers in desertifying Africa or India, where a horrific heatwave and drought killed at least 300 last month and left 330 million without enough water.
  • (11) Each subject was measured for height, weight, triceps and subscapular fatfolds, and body density by underwater weighing (UWW).
  • (12) The results demonstrated that divers are able to discriminate among signals emanating from acoustic sources at various distances underwater and to do so at levels well above chance.
  • (13) The results stress the importance of divers' monitoring during their underwater activity and the necessity of improving their physical training.
  • (14) It is very short time since underwater shock wave has been initially applied to human body.
  • (15) Acoustic tomography in many instances yields blurred images precluding its efficient use for mapping underwater objects in oceanic waveguides.
  • (16) The body fat content of lean and obese women was measured by six different methods: underwater weighing, the current "standard"; body water dilution; whole-body counting; skinfold measurements; bioelectrical impedance; and magnetic resonance imaging.
  • (17) Investigators grappling to solve the mystery of the jet's disappearance are set to scour a zone 1,100 miles (1,800km) west of Perth – previously subject to an aerial search – when an underwater probe resumes in August, the West Australian newspaper said.
  • (18) There was an early water loss of about 1 kg, probably due to mobilization of glycogen stores, and a subsequent fat loss of about 4 kg (as estimated from readings of skinfold thickness and confirmed by underwater weighing).
  • (19) The underwater seal is allowed to intermittently "bubble," thereby permitting partial gastric decompression.
  • (20) BP, which has released the first underwater footage of the spill , told the City this morning that the cost of dealing with it had now hit $450m.