(n.) That by which a lever is sustained, or about which it turns in lifting or moving a body.
(n.) An accessory organ such as a tendril, stipule, spine, and the like.
(n.) The horny inferior surface of the lingua of certain insects.
(n.) One of the small, spiniform scales found on the front edge of the dorsal and caudal fins of many ganoid fishes.
(n.) The connective tissue supporting the framework of the retina of the eye.
Example Sentences:
(1) It is now a well-known fact that the human body is able to use luminous stimulation for aims other than sight; the pineal gland, though no longer directly sensitive to light as in lower animals, is nevertheless the fulcrum of a complex neuro-endocrine system which makes an interaction between light and the human body possible by means of the production of a number of substances of which melatonin is the most widely investigated.
(2) These results are consistent with the interpretation of DF as a zero reference point or fulcrum about which accommodative effort varies.
(3) The letter identified a single point, OcC point (Cervera's occlusal point), as the primary fulcrum from which to perform a correct cephalometric superimposition in order to examine the patient's anticipated growth.
(4) Mayor Rahm Emanuel, the former top adviser to Barack Obama suddenly facing a runoff for re-election, remained at the political fulcrum of a mounting campaign both on social media and the streets of Chicago, where demonstrations were planned for Saturday outside what coordinated campaigners described as mirroring a CIA “black site”.
(5) Two details distinguish this incision from other sutureless closures: the fulcrum in the crotch of the V provides easier access to the anterior chamber for instrument manipulation, and the termination of the scleral tunnel entry posterior to the cornea lessens the likelihood of corneal folds that may interfere with visualization during surgery.
(6) Their firm attachment to the ciliary epithelium and the great number of intercellular junctions known as mechanical structures lend further support to our concept that these structures function as a fulcrum in the process of accommodation.
(7) In case of occlusion, the mandible is elevated by the muscles of mastication with T. M. J. as the fulcrum point, and at this time, the masticatory force concentrated mainly on the dental arch is absorbed into the jaw bone through the periodontal tissues.
(8) The movements and the fulcrums of the prosthesis were changed by the presence of simulated retained roots posterior to the distal abutment.
(9) 10.25pm BST 56 mins Diskerud has done well to be a fulcrum of US attacking play in this half, and Donovan has drifted out to the right to find some space to run at the defense.
(10) The nitrogen of an allylic amine can serve as the fulcrum for stereocontrolled delivery of oxygen to an adjacent trigonal site, and cis-hydroxyamino sugars can thus be prepared.
(11) The shelf attachment to the main maxillary process is progressively undercut by epithelial invagination, producing a fulcrum for shelf elevation.
(12) Standing permanently on guard at the fulcrum of competing privatised arms of the state, armed with his suitcase of his rivals' commercial secrets, is a more tedious occupation.
(13) This is to be avoided because much larger levator resections are required when this ligament's support to the upper lid and the fulcrum effect for the levator are lost.
(14) Due to the superior displacement characteristics of the TMJ, the condyle does not act as the fulcrum in mandibular kinetics.
(15) However, Scholes believes it is the system, rather than the man preferred as the fulcrum of United’s attack, that is flawed.
(16) Rallying supporters at a phone bank on the eve of voting on Monday, Gardner, a congressman, called Colorado the “tip of the spear, the fulcrum of power”.
(17) The instrument differentiated between lateral and rotational parietal bone movements around the fulcrum of the suture.
(18) "Someone has to do it and the ideal would be that you chose the discrete broadcaster of a devolved nation at the fulcrum of the issue," Woodward said.
(19) It was his personality that made Heidelberg a fulcrum of a growing new scientific self-assurance that had no precedent in clinical psychiatry which no longer needed the disciplines of neuropathology and neurophysiology as pillars of support to gain recognition among the experts.
(20) Now the US build a little more inventively with Altidore as the fulcrum and ultimately the intended target of a Johnson cross.
Lever
Definition:
(a.) More agreeable; more pleasing.
(adv.) Rather.
(n.) A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied; -- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures.
(n.) A bar, as a capstan bar, applied to a rotatory piece to turn it.
(n.) An arm on a rock shaft, to give motion to the shaft or to obtain motion from it.
Example Sentences:
(1) In this experiment animals were trained to lever press in two distinctive contexts.
(2) Orientation and lever responding were not functionally related.
(3) In older stages, the cervical joints rotate according to geometric and lever arm principles.
(4) In EastEnders , the mystery surrounding the identity of Kat's secret squeeze continues amid the grinding of narrative levers and the death rattle of overflogged script-horses.
(5) Cats were trained to press a lever for 0.5--1.0 ml of milk reward both in the presence and absence of ambient light.
(6) Setting out how Britain would have a lever over the rest of the EU to demand repatriation of UK competences, Cameron said: "What's happening in Europe right now is massive change being driven by the existence of the euro.
(7) When lever pressing was established, the 2-kHz signal was presented through a speaker adjacent to the response lever according to a different set of variable intertrial intervals.
(8) Officials said the changes to the planning rules will mean it is possible to lever in billions of private sector development in low-cost housing.
(9) Rats were allowed to bar press on either of two levers (left and right).
(10) Knee flexion is synchronized with ankle dorsiflexion by a synchronizer rod and lever.
(11) In order to study the interactions between serotonergic mechanism and electrical stimulation of the mesencephalic central gray substance, rats were trained to lever-press for terminating aversive electric stimuli applied at the Periaqueductal gray and adjoining tectum of the mesencephalon.
(12) Rats were trained to press a lever to obtain a brief burst of pulses to the lateral hypothalamus.
(13) But its original meaning is the practice of using the levers of the state and of government to get difficult things done that otherwise wouldn't happen.
(14) Intact rats and rats bearing lesions of the suprachiasmatic nuclei (SCNX rats) were trained to obtain food by pressing either of two levers located on opposite sides of a cylindrical cage.
(15) We found that attenuation of lever-pressing and water intake by raclopride were not more separated in dose than after, for example, haloperidol.
(16) Young rats weaned at 16 days were taught to press a lever by shaping at 18 days and trained for 11 days (from 20 to 30 days of age) on a fixed-interval 60-sec schedule, at a rate of 5 half-hour sessions per day.
(17) In contrast, the selective norepinephrine uptake inhibitors, desipramine and talsupram, and the selective serotonin uptake inhibitor, citalopram, occasioned averages of only 13 to 19% drug-lever responding.
(18) When reinforcement was not available, each lever response produced a 0.5-sec green light on the key.
(19) Rats implanted with placebo pellets and given access to morphine reestablished lever pressing, while those given access to isotonic saline extinguished their lever pressing.
(20) Levels of acetylcholine were significantly elevated in the telencephalon and diencephalon + mesencephalon of rats killed by near-freezing during conditioned suppression of food-reinforced lever pressing, whereas levels of serotonin, dopamine, and norepinephrine were not altered.