(v. i.) To make a low, hoarse noise in the throat, as a frog, a raven, or a crow; hence, to make any hoarse, dismal sound.
(v. i.) To complain; especially, to grumble; to forebode evil; to utter complaints or forebodings habitually.
(v. t.) To utter in a low, hoarse voice; to announce by croaking; to forebode; as, to croak disaster.
(n.) The coarse, harsh sound uttered by a frog or a raven, or a like sound.
Example Sentences:
(1) The first two experiments imply that stimulation of the skin of the trunk initiates the release croak; Experiments 3 and 4 suggest that an internal afferent source inhibits the release croak and might mediate an important aspect of receptivity in female frogs.
(2) The cathartic moment, in which the king realises he's OK and lovable just as he is, was wonderful for the film-makers to discover, and has been wonderful for worldwide audiences ever since (and the king doesn't die… he merely "croaks").
(3) Poppies in the long grass, frogs croaking for mates, wasps droning lazily at the window, tomatoes and strawberries ripening in garden pots and crickets buzzing at dusk: these are the sights and sounds of an English summer.
(4) We are all getting older thanks to better living conditions, and the French are way older than they have any right to be considering their diet, but the dependable Swedes who have always been goody-goodies are still croaking in their 80s, so most of us will have to settle for that.
(5) And so they hardly ever leave a flat in which, thanks to the croaking boiler, the temperature hovers around 10 degrees.
(6) With drugs, oblivious, in a basement, frozen nobly on a mountain top, screaming in a car crash, or traditionally in a bed surrounded by our family and children, croaking out our last wishes?
(7) "Intelligent tadpoles reconcile themselves to the inconvenience of their position by reflecting that although most of them will live to be tadpoles and nothing more, the most fortunate of the species will one day shed their tails, distend their mouths and stomachs, hop nimbly on to dry land and croak addresses to their former friends on the virtue by which tadpoles of character and capacity can rise to be frogs."
(8) Three decades later, in July 2011, to watch a slightly pasty, croaking, self-styled "humble" Murdoch appear before a televised committee of suddenly irreverent MPs was to see something dragged out into the light: a power relationship that would never be quite the same again.
(9) Talked a lot about Under Milk Wood: how he came to London in 1953, with a fiver in his pocket, and went in search of Dylan Thomas in the Soho and Fitzrovia pubs, only to find that he had just croaked in New York.
(10) But as the fearless Ali strutted on, inventing new ways, new scenes, new angles, new endings, those croaking pronouncements of veterans petered out.
(11) The only MacTaggarts regularly recalled with relish are those in which all-powerful television grandees were venomously slagged off in public - Dennis Potter's attack on the then BBC director general John Birt as a "croak-voiced Dalek" in 1993, and Michael Grade's escalation of his own feud with Birt the previous year.
(12) I learn to distinguish the croaks of the marsh frog from the scratchy cry of the reed warbler and watch brightly coloured damselflies darting about in the bullrushes.
(13) This report investigates the sources of stimuli which initiate and inhibit the release croak of Rana pipiens.
(14) It can be a surprisingly noisy place, what with the barking of the muntjac deer, the croaking of the frogs, the quacking of the widgeons … Look and listen out for Faint lights near the ground, especially in June and July.
(15) Cool off after a hot day on the beach in the natural swimming pond, complete with lily pads and croaking frogs.
(16) At the moment the city also sounds like seagulls croaking at each other from outside my window from about 3am every morning.
(17) Roger no longer expresses a desire to croak it prematurely although he is 69 years old now and back on the road.
(18) Even if it was in a husky croak, and I couldn't manage the chorus.
(19) There was no trace of human life, only the croak of a raven and a trickling stream.
(20) The pectoral fin of the croaking gourami, Trichopsis vittatus, has become modified as a sound-producing organ and retains its original function in locomotion and hovering.
Frog
Definition:
(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.