(n.) An amphibious animal of the genus Rana and related genera, of many species. Frogs swim rapidly, and take long leaps on land. Many of the species utter loud notes in the springtime.
(n.) The triangular prominence of the hoof, in the middle of the sole of the foot of the horse, and other animals; the fourchette.
(n.) A supporting plate having raised ribs that form continuations of the rails, to guide the wheels where one track branches from another or crosses it.
(n.) An oblong cloak button, covered with netted thread, and fastening into a loop instead of a button hole.
(n.) The loop of the scabbard of a bayonet or sword.
(v. t.) To ornament or fasten (a coat, etc.) with trogs. See Frog, n., 4.
Example Sentences:
(1) A spindle cell sarcoma appeared 20 months after implantation of a pellet of 3-methylcholanthrene in the denervated foreleg of an adult frog, Rana pipiens.
(2) We have previously shown that serotonin is present in secretory granules of frog adrenochromaffin cells; concurrently, we have demonstrated that serotonin is a potent stimulator of corticosterone and aldosterone secretion by adrenocortical cells.
(3) The actions of the polyvalent cationic dye Ruthenium Red and the enzyme neuraminidase were studied at the frog neuromuscular junction.
(4) The purpose of our study was to determine the effect of HVPC on edema formation in frogs.
(5) The content of unsaturated fatty acids in walleye pollock PRM is 1.4 times greater than in frog PRM.
(6) The concentration dependences of response of frog tongue to D-fructose, D-glucose, and sucrose were almost the same, D-galactose, however, elicited a much larger response in comparison with the other sugars in the whole range of concentrations examined.
(7) Interpreted in term of compartmental analysis, these observations suggest that a) the frog skin epithelium contains 2 separated but communicating compartments having different degrees of accessibility from outside; b) only that compartment filling at a fast rate (0.5 min) is involved in the transepithelial Na transport; c) the other one, filling at a rate of 4 to 7 min, is resplenished only under conditions where the basal pump system has a reduced activity.
(8) The mechanisms underlying the three types of Cd effects on the frog skin were discussed in relation to the Na, K-ATPase activity.
(9) The addition of the Ca2+ ionophore A23187 (1 microM) to the inside solution of the frog skin resulted in an approx.
(10) At a concentration of 10 microM, tetraamine 4 did not affect histamine and 5-hydroxytryptamine receptors of guinea pig ileum or alpha-adrenoreceptors of guinea pig atria whereas it inhibited postsynaptic alpha-adrenoreceptors of rat vas deferens with a -log K value of 5.23 and nicotinic receptors of frog rectus abdominis with an IC50 value of 0.23 microM.
(11) The authors studied the effects of varying Na+ and Ca++ concentrations and of replacing H2O with D2O in Ringer's solution upon the actions of general and local anesthetics on isolated frog sciatic nerves.
(12) Antibiotics, X-537A and A23187, were added in micromolar concentrations to selected bathing solutions of skinned frog muscle fibers, and they were shown to affect the production of tension in the skinned fibers.
(13) The influence of stretch and radial compression on the width of mechanically skinned fibers from the semitendinosus muscle of the frog (R. pipiens) was examined in relaxing solutions with high-power light microscopy.
(14) The aim of this study was to determine the frequency of occurrence of the phenomenon in skin and muscle capillaries in both young and mature frogs and to examine the ultrastructure of endothelial cells found in these capillaries.
(15) At I = 0.2 M, pH 7, and 15 degrees C, the inhibition constants for rabbit myofibrils are 0.17, 3, and 5 mM, respectively; the values for frog myofibrils at 0 degrees C are very similar, being 0.22, 1.5, and 2.5 mM.
(16) A detailed comparison of the interaction of beta-adrenergic receptors with adenylate cyclase stimulation and modification of this interaction by guanine nucleotides has been made in two model systems, the frog and turkey erythrocyte.
(17) Of these 34 antibodies, 33 recognized the rat receptor and 1 was shown to precipitate the receptors from mice, chickens, and frogs with high affinity.
(18) Such a heterogeneity in DNA content in the diploid part of HPR cell population could apparently suggest some differences in the nuclear chromatin arrangement to be always higher in spring before the frog spawning, and it seems to be characteristic of this type of cells.
(19) Isolated frog retinas kept receptor side-upward in a moist chamber without perfusion showed the well-known slow PIII generated by the potassium decrease around receptors.
(20) We now report that two synthetic diacylglycerols (DAG) replicate the stimulatory and inhibitory effects of TPA on frog skin.
Leapfrog
Definition:
(n.) A play among boys, in which one stoops down and another leaps over him by placing his hands on the shoulders of the former.
Example Sentences:
(1) Aims include overtaking Tesco to become the market leader in general merchandise and leapfrogging Sainsbury's to become No 2 in food.
(2) Reaping the benefits of a successful speech to Iowa conservatives the preceding weekend, Walker leapfrogged more established candidates and secured 15% of the vote – up from 4% in October.
(3) In a sense, what the BBC is now trying to do is to leapfrog from its "multichannel" phase into the on-demand future.
(4) Their season was discussed in the past tense, as though it had ended with the week 16 loss to Carolina that allowed the Panthers to leapfrog them into first place in the NFC South.
(5) Leapfrogging the rest of the field through technological means, however, is harder than in certain other sports.
(6) Where the inferior view shows a "tent tip" skyline, lateral crus advancement is required and can be achieved in asynchronous repairs by Pigott alar leapfrog at primary repair or by Potter V-Y advancement at the time of forked flap columella lengthening.
(7) Yes, Bryant's return should help the Lakers remain competitive for the next two-plus seasons, but it's hard to see them coming out of a crowded Western Conference where they would have to leapfrog the Oklahoma City Thunder, San Antonio Spurs, Golden State Warriors, Houston Rockets and even, it seems now, the Portland Trail Blazers.
(8) Following his victory, Murray leapfrogged double Olympic gold medallist Mo Farah in the betting for the most competitive BBC Sports Personality Award of all time, though he remains behind another who bucked history this summer – Tour de France winner Bradley Wiggins.
(9) Its technology would let any handset maker leapfrog the opposition, which will be interesting to Apple and Microsoft, the owner of Nokia, which both need to catch up on rivals in this field.
(10) A resurgent Rupert Murdoch , after two years of decline in the MediaGuardian 100, bounced back to fourth position ‑ leapfrogging his son James ‑ on the back of his decision to put up paywalls around the online content of the Times and Sunday Times.
(11) This review chronicles the leapfrogging of medical and surgical creativity and contributions to saving lives and making those lives healthy through informed care for people with congenital heart disease.
(12) In 2007 he leapfrogged Li Keqiang – until then seen as likely to succeed Hu, but seen perhaps as too much Hu's protege – as the consensus candidate in a system built on collective decision-making.
(13) It also leapfrogged Germany in the number of people with more than $50m, with 400 more than 2014 and a total of 5,400.
(14) It took second place in the women's weekly market, as classified by ABC, and top place among the celebrity titles, leapfrogging sister title OK!, which was 15.7% up year on year but 1.9% down on the previous six months to 588,546.
(15) Scotland has now been leapfrogged by Latvia and Lithuania whose Ministers sit at the top table and make their farmers a priority.
(16) In six years, Santander has become one of the biggest banks on the British high street, leapfrogging HSBC after today's deal.
(17) Now the MP for South Northamptonshire, who entered parliament in 2010, has leapfrogged Michael Gove to become second favourite with the bookmakers to be the next Conservative leader and prime minister.
(18) A deal would also help WPP leapfrog its rival Omnicom into first place among advertising behemoths, a ranking it has taken twice previously: in the 1990s - when the company's overstretched position also put it on the brink of collapse - and earlier this decade.
(19) Global Radio's Capital, which had leapfrogged Heart into the runner-up spot last time round, slipped 6.9% on the previous quarter to post a reach - listeners tuning in for more than five minutes a week – of 1.81 million , according to official Rajar listening figures published today.
(20) It is almost unheard of for a finance director to leapfrog the role of chief executive and be installed as chairman.