What's the difference between duck and pair?

Duck


Definition:

  • (v. i.) To drop the head or person suddenly; to bow.
  • (n.) A pet; a darling.
  • (n.) A linen (or sometimes cotton) fabric, finer and lighter than canvas, -- used for the lighter sails of vessels, the sacking of beds, and sometimes for men's clothing.
  • (n.) The light clothes worn by sailors in hot climates.
  • (v. t.) To thrust or plunge under water or other liquid and suddenly withdraw.
  • (v. t.) To plunge the head of under water, immediately withdrawing it; as, duck the boy.
  • (v. t.) To bow; to bob down; to move quickly with a downward motion.
  • (v. i.) To go under the surface of water and immediately reappear; to dive; to plunge the head in water or other liquid; to dip.
  • (v. t.) Any bird of the subfamily Anatinae, family Anatidae.
  • (v. t.) A sudden inclination of the bead or dropping of the person, resembling the motion of a duck in water.

Example Sentences:

  • (1) The move was confirmed by a Lib Dem aide, who said Tory claims to be green were "already a lame duck and are now dead in the water".
  • (2) The temperature of the anterior and middle hypothalamus of conscious Pekin ducks was altered with chronically implanted thermodes.
  • (3) Previous studies in the rat, mouse and duck had suggested that agents present in cigarette smoke might induce a cytochrome P450-mediated detoxication pathway, leading to protection against aflatoxin-induced primary liver cancer.
  • (4) Prolactin plasma concentrations decreased rapidly at the end of incubation in ducks which successfully hatched young as well as in unsuccessful incubators.
  • (5) From ducks A. laidlawii, M. anatis and various unclassified strains were isolated, among these M. anatis and unclassified arginine splitting mycoplasma strains proved to be pathogenic.
  • (6) The early phases of hepadnaviral infection were studied in primary duck hepatocyte cultures.
  • (7) In intact ducks changes in blood flow were recorded as changes in digital subcutaneous tissue temperature.
  • (8) But on Sunday night it was hard to duck the euphoria.
  • (9) In the Commons on Monday , John Whittingdale, the culture secretary who only in February chaired the committee that concluded “No future licence fee negotiations must be conducted in the way of the 2010 settlement”, ducked the invitation to explain how exactly the same thing had just happened again.
  • (10) He was never an intellectual; at Oxford, he did no work, and was proudest of playing squash and cricket for the university, though against Cambridge at Lord's he failed to take a wicket and made a duck.
  • (11) Adult mallard ducks fed 0, 2, 20, or 200 ppm of cadmium chloride in the diet were sacrificed at 30-day intervals and tissues were analyzed for cadmium.
  • (12) Typical herpesviral capsids and virions were seen in negatively-stained preparations of duck embryo fibroblasts.
  • (13) To study the effect of air sac pressures, a controllable pressure difference was produced between the air sac orifices of fixed duck lungs.
  • (14) Images of dead ducks in oil sands tailings pond have been plastered on billboards in Denver, Portland, Seattle and Minneapolis.
  • (15) You cannot now duck the fact that we have an electoral system which is completely out of step with the aspirations and hopes of millions of British people," he said.
  • (16) Three Newcastle disease viruses (NDV) isolated from wild ducks in Japan were evaluated for their biological activities, pathogenicity and immunogenicity against one-day-old chickens.
  • (17) With these synthetic peptides, radioimmunoassay systems for dog, rat, and duck C-peptides were developed.
  • (18) On the basis of the antiviral action of sulfated polyanions in human immunodeficiency virus and other viral infections, we studied the effect of dextran sulfate and heparin on duck hepatitis B virus infection.
  • (19) The (Na+ plus K+)-ATPase activities in salt gland homogenates increased 3- to 4-fold after saline treatment of ducks for 3 weeks.
  • (20) Compared with intact ducks, neither decerebration nor brain stem transection at the rostral mesencephalic (RM) level had any effect on development of diving bradycardia, or heart rate at the end of two-min dives.

Pair


Definition:

  • (n.) A number of things resembling one another, or belonging together; a set; as, a pair or flight of stairs. "A pair of beads." Chaucer. Beau. & Fl. "Four pair of stairs." Macaulay. [Now mostly or quite disused, except as to stairs.]
  • (n.) Two things of a kind, similar in form, suited to each other, and intended to be used together; as, a pair of gloves or stockings; a pair of shoes.
  • (n.) Two of a sort; a span; a yoke; a couple; a brace; as, a pair of horses; a pair of oxen.
  • (n.) A married couple; a man and wife.
  • (n.) A single thing, composed of two pieces fitted to each other and used together; as, a pair of scissors; a pair of tongs; a pair of bellows.
  • (n.) Two members of opposite parties or opinion, as in a parliamentary body, who mutually agree not to vote on a given question, or on issues of a party nature during a specified time; as, there were two pairs on the final vote.
  • (n.) In a mechanism, two elements, or bodies, which are so applied to each other as to mutually constrain relative motion.
  • (v. i.) To be joined in paris; to couple; to mate, as for breeding.
  • (v. i.) To suit; to fit, as a counterpart.
  • (v. i.) Same as To pair off. See phrase below.
  • (v. t.) To unite in couples; to form a pair of; to bring together, as things which belong together, or which complement, or are adapted to one another.
  • (v. t.) To engage (one's self) with another of opposite opinions not to vote on a particular question or class of questions.
  • (v. t.) To impair.

Example Sentences:

  • (1) The distance between the end of fic and the start of pabA was 31 base pairs.
  • (2) At the fepB operator, a 31 base-pair Fur-protected region was identified, corresponding to positions -19 to +12 with respect to the transcriptional start site.
  • (3) Mapping of the cross-link position between U2 and U6 RNAs is consistent with base-pairing between the 5' domain of U2 and the 3' end of U6 RNA.
  • (4) This value is about 30 times higher than the association constant for guanine-cytosine base pair formation under the same experimental conditions.
  • (5) For related pairs, both the primes (first pictures) and targets (second pictures) varied in rated "typicality" (Rosch, 1975), being either typical or relatively atypical members of their primary superordinate category.
  • (6) Plasma renin activity (PRA) and aldosterone concentration were measured before and during submaximal exercise in 10 male monozygotic twin pairs who were discordant for smoking.
  • (7) Fifty-two pairs of canine femora were tested to failure in four-point bending.
  • (8) Other DNase I hypersensitive sites located adjacent to the S14 cap site at -65 to -265 base pairs (Hss-1) or upstream at -1.3 kb (Hss-2), -2.1 kb (Hss-3'), -5.3 kb (Hss-4), and -6.2 kb (Hss-5) remained unaffected by changes in S14 gene transcription.
  • (9) Delta roc, which extends from base pairs 41883 to 43825, overlaps the nin5 deletion, which extend from base pairs 40501 to 43306.
  • (10) In all cases, endocrine cells immunoreactive to only one of the paired antisera were detected except for anti-glucagon and anti-glucagon-like peptide 1, which always immunostained the same cells.
  • (11) Arterial-type flows produced a pair of vortex sinks downstream of the branching port.
  • (12) Benzaldehyde's in cherries and cherrystones and amaretto, so it's immediately a base to pair things with."
  • (13) The lengths and heights of the scalae tympani in ten pairs of serially sectioned temporal bones were measured by an adaptation of the serial section method of cochlear reconstruction.
  • (14) Paired tolbutamide and glucose infusions using a square wave technique demonstrated that although early phase insulin secretion is dimished in the fetus, this is not due to an absolute deficiency of stored insulin.
  • (15) The distribution of the amino acid pairs, i, i + 1 in alpha-helical configurations does not differ from the random pairing.
  • (16) Male Sprague Dawley rats either trained (T, N = 9) for 11 wk on a rodent treadmill, remained sedentary, and were fed ad libitum (S, N = 8) or remained sedentary and were food restricted (pair fed, PF, N = 8) so that final body weights were similar to T. After training, T had significantly higher red gastrocnemius muscle citrate synthase activity compared with S and PF.
  • (17) We propose that, for a GC base pair in B conformation, there are two amino proton exchangeable states--a cytosine amino proton exchangeable state and a guanine amino proton exchangeable state; both require the disruption of only the corresponding interbase H bond.
  • (18) Whole gastrocnemius muscles were incubated in Ringer's solution enriched with H2-17O; the paired contralateral gastrocnemius muscles were incubated in a similar solution enriched with deuterons, as well.
  • (19) The building block of cytokeratin IFs is a heterotypic tetramer, consisting of two type I and two type II polypeptides arranged in pairs of laterally aligned coiled coils.
  • (20) For example, stem pairing with a sequence other than wild-type resulted in normal protein binding in vitro but derepression of protein synthesis in vivo.