What's the difference between seal and wafer?

Seal


Definition:

  • (n.) Any aquatic carnivorous mammal of the families Phocidae and Otariidae.
  • (n.) An engraved or inscribed stamp, used for marking an impression in wax or other soft substance, to be attached to a document, or otherwise used by way of authentication or security.
  • (n.) Wax, wafer, or other tenacious substance, set to an instrument, and impressed or stamped with a seal; as, to give a deed under hand and seal.
  • (n.) That which seals or fastens; esp., the wax or wafer placed on a letter or other closed paper, etc., to fasten it.
  • (n.) That which confirms, ratifies, or makes stable; that which authenticates; that which secures; assurance.
  • (n.) An arrangement for preventing the entrance or return of gas or air into a pipe, by which the open end of the pipe dips beneath the surface of water or other liquid, or a deep bend or sag in the pipe is filled with the liquid; a draintrap.
  • (v. t.) To set or affix a seal to; hence, to authenticate; to confirm; to ratify; to establish; as, to seal a deed.
  • (v. t.) To mark with a stamp, as an evidence of standard exactness, legal size, or merchantable quality; as, to seal weights and measures; to seal silverware.
  • (v. t.) To fasten with a seal; to attach together with a wafer, wax, or other substance causing adhesion; as, to seal a letter.
  • (v. t.) Hence, to shut close; to keep close; to make fast; to keep secure or secret.
  • (v. t.) To fix, as a piece of iron in a wall, with cement, plaster, or the like.
  • (v. t.) To close by means of a seal; as, to seal a drainpipe with water. See 2d Seal, 5.
  • (v. t.) Among the Mormons, to confirm or set apart as a second or additional wife.
  • (v. i.) To affix one's seal, or a seal.

Example Sentences:

  • (1) To provide a seal with low pressure-high volume cuffed tubes, cuff sizes of 20.5 mm and 27.5 mm are recommended for female and male patients, respectively.
  • (2) Cermet cement sealings showed defects more frequently.
  • (3) The channels usually ceased conducting within a few minutes after seal formation with the patch pipette and could not be re-activated with depolarizing voltage steps.
  • (4) For all the understandable insistence that parliament and London would continue as normal after Wednesday’s terrorist attack, almost 24 hours later a large section of streets around the area remained sealed off by police.
  • (5) Tone pulses and noise stimuli were mixed acoustically and presented using calibrated, sealed stimulating systems.
  • (6) In general, after recording a baseline tympanogram, mechanically created positive and negative air pressures are created in a hermetically sealed ear canal causing increased pressure on the middle ear air cushion.
  • (7) Ecological evidence is considered to suggest that the rapid maturation of C. semerme in rats may also occur when the parasite becomes established in seals.
  • (8) Increased conversion of 25-OHD to 24,25-(OH)2D and a high capacity for vitamin D storage in their large blubber mass appeared to be factors in the resistance of seals to vitamin D toxicity.
  • (9) The mechanism of sealed-off perforation of the duct is discussed.
  • (10) Membranes were sandwiched between two gas-permeable, plastic foils, placed in a sealed cuvette, and gassed with H2 as reductant or O2 as oxidant.
  • (11) Treatment animals had the anastomoses and graft sealed with a suspension of N-butyl-2-cyanoacrylate and 1.2 g tobramycin powder (antibiotic glue, ANGL) after contamination.
  • (12) The results demonstrated that, when the coronal half of the root canal filling material was removed immediately after placement with pluggers, there was a loss of the apical seal and leakage in thirteen of twenty teeth.
  • (13) Ultrastructural study of the Leydig cells of nonbreeding crabeater, leopard and Ross seals showed that three types of cells could be distinguished.
  • (14) National bans on commercial trading in seal products are already in place in 30 countries including the US, the Netherlands and Italy.
  • (15) Under these conditions, with careful attention to sealing at ankles and waist, it was possible to estimate penetration as low as 0.3%.
  • (16) We used transvitreally delivered cyanoacrylate tissue adhesive to seal retinal breaks in 25 selected patients undergoing vitreous surgery for complicated retinal detachment.
  • (17) To date, numerous products have been evaluated, and many hundreds have received the council's seal of acceptance.
  • (18) She explained that, as a baby, she had been subjected to female genital mutilation (FGM): her clitoris cut off and her vagina sealed, with only a small hole remaining for urine and menstruation.
  • (19) After accidental dissection of the thoracic duct in infants, leakage of chyle could be sealed successfully in 6 cases.
  • (20) These microcapsules can be dried and retain activity when sealed in a jar at 4 degrees C.

Wafer


Definition:

  • (n.) A thin cake made of flour and other ingredients.
  • (n.) A thin cake or piece of bread (commonly unleavened, circular, and stamped with a crucifix or with the sacred monogram) used in the Eucharist, as in the Roman Catholic Church.
  • (n.) An adhesive disk of dried paste, made of flour, gelatin, isinglass, or the like, and coloring matter, -- used in sealing letters and other documents.
  • (v. t.) To seal or close with a wafer.

Example Sentences:

  • (1) The ruling centre-right coalition government of Angela Merkel was dealt a blow by voters in a critical regional election on Sunday after the centre-left opposition secured a wafer-thin victory, setting the scene for a tension-filled national election in the autumn when everything will be up for grabs.
  • (2) The average thickness of this part of the wall is 1.5 mm (minimum is wafer-thin and maximum is 3 mm).
  • (3) The following processes were used to create this photosensing architecture: 1) thermomigration of aluminum pads through an n-type silicon wafer; 2) creation of pn-junction photosensors on one side of the wafer; and 3) creation of aluminum pad ohmic contacts to the thermomigrated, through chip interconnects and the substrate on the back side of the wafer.
  • (4) Thin platelet crystals, densely packed monolayers, and low-density deposits of beef liver catalase were prepared on the surface of silicon wafers and negatively stained with phosphotungstic acid.
  • (5) In between ranged the caries values of two other tested sweets, wafers and gum drops.
  • (6) Briefly, devitalized bovine bone wafers, with cells in situ, are fixed, stained with toluidine blue, and then examined by reflected light microscopy.
  • (7) "The largest impact comes from the energy used in extracting materials [from the Earth] and transporting them, as well as the energy and water used to process components such as silicon wafers," said Taplin.
  • (8) These glycol ethers are contained in positive photoresists used in the wafer fabrication process.
  • (9) Bone grafts consisted of cancellous bone, bone blocks, and wafer-type grafts used singly or in combination.
  • (10) After the package was voted through by a wafer-thin majority, politicians were escorted out of the parliament by police.
  • (11) Lateral diffusion measurements of L-alpha-dipalmitoylphosphatidylcholine (DPPC) bilayers supported on oxidized silicon wafers reveal two sharp phase transitions at temperatures similar to those found in multilayer systems with several different techniques.
  • (12) In this study, T4 bacteriophage virus particles were deposited from solution onto electronic-grade flat silicon wafers and imaged in air with the microscope.
  • (13) Two kinds of cobalt targets, a wafer type (diameter 8.0 mmxthickness 2.3 mm, 1.1g) and a pellet type (diameter 1.0 mmxlength 1.0mm, 6.9 mg) were used.
  • (14) Cameron, who warned of "wafer thin" British support for the EU, told EU leaders: "[Jean-Claude Juncker] is the ultimate Brussels insider who has been at the table for the last two decades of decisions.
  • (15) Partial resection of the distal ulna (wafer resection) has been used to treat patients with symptomatic tears of the triangular fibrocartilage complex or mild ulna impaction syndrome.
  • (16) Phil Woolas's wafer-thin victory in Oldham East and Saddleworth seat – he won by 103 votes following two recounts – was one of the more surprising results of the 2010 election.
  • (17) This was a source of trouble for John Major when he had a wafer thin majority between 1992-97.
  • (18) Square wafers (10 mm X 10 mm X 1 mm) were studied, with the surface sandblasted in one-half of the specimens.
  • (19) Because of its easy handling the method of quasi-planimetry was further developed and used for direct analysis of enorally obtained wafers of different characteristics.
  • (20) "For many establishments, working on wafer thin margins and high fixed costs, any restriction in trading hours could tip them into loss," he said.