(n.) A cylinder, or a cylindrical perforation, having a continuous rib, called the thread, winding round it spirally at a constant inclination, so as to leave a continuous spiral groove between one turn and the next, -- used chiefly for producing, when revolved, motion or pressure in the direction of its axis, by the sliding of the threads of the cylinder in the grooves between the threads of the perforation adapted to it, the former being distinguished as the external, or male screw, or, more usually the screw; the latter as the internal, or female screw, or, more usually, the nut.
(n.) Specifically, a kind of nail with a spiral thread and a head with a nick to receive the end of the screw-driver. Screws are much used to hold together pieces of wood or to fasten something; -- called also wood screws, and screw nails. See also Screw bolt, below.
(n.) Anything shaped or acting like a screw; esp., a form of wheel for propelling steam vessels. It is placed at the stern, and furnished with blades having helicoidal surfaces to act against the water in the manner of a screw. See Screw propeller, below.
(n.) A steam vesel propelled by a screw instead of wheels; a screw steamer; a propeller.
(n.) An extortioner; a sharp bargainer; a skinflint; a niggard.
(n.) An instructor who examines with great or unnecessary severity; also, a searching or strict examination of a student by an instructor.
(n.) A small packet of tobacco.
(n.) An unsound or worn-out horse, useful as a hack, and commonly of good appearance.
(n.) A straight line in space with which a definite linear magnitude termed the pitch is associated (cf. 5th Pitch, 10 (b)). It is used to express the displacement of a rigid body, which may always be made to consist of a rotation about an axis combined with a translation parallel to that axis.
(n.) An amphipod crustacean; as, the skeleton screw (Caprella). See Sand screw, under Sand.
(v. t.) To turn, as a screw; to apply a screw to; to press, fasten, or make firm, by means of a screw or screws; as, to screw a lock on a door; to screw a press.
(v. t.) To force; to squeeze; to press, as by screws.
(v. t.) Hence: To practice extortion upon; to oppress by unreasonable or extortionate exactions.
(v. t.) To twist; to distort; as, to screw his visage.
(v. t.) To examine rigidly, as a student; to subject to a severe examination.
(v. i.) To use violent mans in making exactions; to be oppressive or exacting.
(v. i.) To turn one's self uneasily with a twisting motion; as, he screws about in his chair.
Example Sentences:
(1) Total excision and immediate reconstruction were done with alloplastic material fixated with microplates and screws.
(2) Two hundred and forty root canals of extracted single-rooted teeth were prepared to the same dimension, and Dentatus posts of equal size were cemented without screwing them into the dentine.
(3) The committee's findings include that the attacks were not extensively planned by the perpetrators; the intelligence community did a good job of warning about the risk of an attack but a bad job of summarizing the attack when it happened; the state department screwed up by not beefing up security at the mission; nobody blocked any military response; and that the Obama administration was slow to produce a paper trail but was generally not a sinister actor in the episode.
(4) The pedicle screw systems were always the most rigid.
(5) Closure is accomplished by suture of soft tissues and reattachment of the posterior trochanteric fragment with bone screws.
(6) Two of the 7 sets of iliosacral screws failed postoperatively (28%).
(7) An algorithm is implemented to determine the form and phase shift for inconsistent type II quadrupoles for any space group having glide or screw-axis translations which are not a consequence of lattice centering.
(8) It constitutes an alternative to Ender nailing, screw-plate, and nail-plate.
(9) Changes in radiostrontium clearance (SrC) and bone formation (tetracycline labeling) were observed in the femurs of skeletally mature dogs following the various operative steps involved in bone screw fixation.
(10) Several conventional internal fixation techniques and a three converging screw method were used.
(11) The criteria of failure of pedicular instrumentation or "death" of an implant were defined as 1) screw bending, 2) screw breakage, 3) infection, 4) loosening of implants, 5) any rod or plate hardware problems, or 6) removal of hardware due to a neurologic complication.
(12) Cadaver studies have been carried out and transpedicular screw position has been confirmed by computed tomography scan.
(13) In this study, we performed a series of in vitro tests to compare the breaking strength of plated bone analogues that used either unicortical or bicortical end screws.
(14) Successful treatment of scaphoid nonunions with screw fixation and cast-free after-treatment does not depend on the implant used but rather on careful case selection and precise surgical technique.
(15) The Herbert bone screw was initially developed for management of fractures of the carpal scaphoid.
(16) Plus, unlike planet-screwing fossil fuels, solar could actually be subsidy-free in a few years.
(17) The intensity-measuring device in both apparatuses has a mobile disk attached to a motionless axis by a spiral spring; the clamps have fixing screws in the butts of a spong.
(18) A variety of quality tests, of biomechanical screws, are used, before performing the operations, that flaws may be detected.
(19) Most fractures were fixed with interfragmentary screws and external fixators.
(20) To give variations in the peak flow-rate (from pulsatile to intermediate to non-pulsatile), three types of blood pump (piston-bellows, screw, and centrifugal) were applied to dogs.
Twist
Definition:
(v. t.) To contort; to writhe; to complicate; to crook spirally; to convolve.
(v. t.) Hence, to turn from the true form or meaning; to pervert; as, to twist a passage cited from an author.
(v. t.) To distort, as a solid body, by turning one part relatively to another about an axis passing through both; to subject to torsion; as, to twist a shaft.
(v. t.) To wreathe; to wind; to encircle; to unite by intertexture of parts.
(v. t.) To wind into; to insinuate; -- used reflexively; as, avarice twists itself into all human concerns.
(v. t.) To unite by winding one thread, strand, or other flexible substance, round another; to form by convolution, or winding separate things round each other; as, to twist yarn or thread.
(v. t.) Hence, to form as if by winding one part around another; to wreathe; to make up.
(v. t.) To form into a thread from many fine filaments; as, to twist wool or cotton.
(v. i.) To be contorted; to writhe; to be distorted by torsion; to be united by winding round each other; to be or become twisted; as, some strands will twist more easily than others.
(v. i.) To follow a helical or spiral course; to be in the form of a helix.
(n.) The act of twisting; a contortion; a flexure; a convolution; a bending.
(n.) The form given in twisting.
(n.) That which is formed by twisting, convoluting, or uniting parts.
(n.) A cord, thread, or anything flexible, formed by winding strands or separate things round each other.
(n.) A kind of closely twisted, strong sewing silk, used by tailors, saddlers, and the like.
(n.) A kind of cotton yarn, of several varieties.
(n.) A roll of twisted dough, baked.
(n.) A little twisted roll of tobacco.
(n.) One of the threads of a warp, -- usually more tightly twisted than the filling.
(n.) A material for gun barrels, consisting of iron and steel twisted and welded together; as, Damascus twist.
(n.) The spiral course of the rifling of a gun barrel or a cannon.
(n.) A beverage made of brandy and gin.
(v. t.) A twig.
Example Sentences:
(1) Aberrant forms (elongated and twisted) in the vacuole and double virions in the plasma membrane were observed as early as 65 h after infection.
(2) Electron microscopy shows that at neutral pH, CEA particles consist of homogeneous, morphologically distinctive, twisted rod-shaped particles, about 9 X 40 nm.
(3) Rapid swelling of the knee following a blow or twisting injury is considered a significant injury.
(4) Intermolecular contacts occur in both oligomers in the minor groove: in the B form through twisted guanine-guanine hydrogen bonding, and in the Z form through base-base stacking and the water network.
(5) Ings twisted the knee during his first training session with Klopp in charge and tests have shown the former Burnley forward ruptured an anterior cruciate ligament, meaning that a player who has just broken into England’s senior team will be out for a minimum of six months.
(6) Leicester looked a little sorry for themselves and, with their concentration down, United twisted the knife.
(7) Gowher Rizvi, chief representative of the prime minister, Sheik Hasina, told the Guardian that preparations for the forthcoming elections, were "completely on track" and that the tribunal, probing crimes committed during the 1971 war in which Bangladesh broke away from Pakistan, was about bringing justice previously denied by "the twists and turns" of the country's history.
(8) The base orientations are characterized by a substantial inclination and propellor twist.
(9) Among the non-standard postures examined were: twisting while lifting or lowering, lifting and lowering from lying, sitting, kneeling, and squatting positions, and carrying loads under conditions of constricted ceiling heights.
(10) A vicious feud playing out within Uzbekistan's ruling family took a new twist on Monday , when prosecutors announced that the clan's most flamboyant member faces charges of involvement in mafia-style corruption.
(11) The possible arrangements of molecules within the twisted ribbons have been deduced and are found to be fairly closely related.
(12) Idiopathic torsion dystonia (ITD) is characterized by sustained, involuntary muscle contractions, frequently causing twisting and repetitive movements or abnormal postures.
(13) These results indicate that the polypeptide chain, driven by energetics (nonbonded and electrostatic interactions), is folded into a typical left-handed twisted four-helix bundle with an approximately 4-fold symmetric array, as observed in most four alpha-helix proteins.
(14) In the mutants twist and snail, which fail to differentiate the ventrally derived mesoderm, mitoses specific to the mesoderm are absent.
(15) Fulham were helped by United being forced into a trio of substitutions at the interval, as Rafael succumbed to a twisted ankle, Cleverly had double vision and Evans had back trouble.
(16) Blockage of the balloon system was possibly caused by twisting the system to reach and pass the lesion in the branch of left circumflex coronary artery.
(17) In the tradition of the American author Patricia Highsmith, creator of the charming psychopath Tom Ripley, Rendell used twisting plots to expose twisted minds.
(18) From previous genetic and biochemical studies it was hypothesized that dorsal might be responsible for the activation of the zygotic gene twist.
(19) Finally, the twisted nose was treated by freeing the nasal components, straightening the bone and cartilage, and replacing them in their anatomical positions.
(20) It doesn’t do a lot at the moment, but there’s a lot of potential for a modern twist on board games here.