What's the difference between harden and stiffen?

Harden


Definition:

  • (v. t.) To make hard or harder; to make firm or compact; to indurate; as, to harden clay or iron.
  • (v. t.) To accustom by labor or suffering to endure with constancy; to strengthen; to stiffen; to inure; also, to confirm in wickedness or shame; to make unimpressionable.
  • (v. i.) To become hard or harder; to acquire solidity, or more compactness; as, mortar hardens by drying.
  • (v. i.) To become confirmed or strengthened, in either a good or a bad sense.

Example Sentences:

  • (1) Osmotically treated red cells, red cells partially hardened with increasing glutaraldehyde concentrations, and mixtures of normal and hardened red cells were used to test the method.
  • (2) "But if public opposition to further austerity measures hardens, the Greek government could find it even tougher to put the public finances back on a sustainable footing."
  • (3) It's not as if they were once tolerant and have hardened their hearts as they've grown older.
  • (4) Insertion of an adequate approximate amalgam filling and its finish after hardening is one of the basic preventive measures in marginal periodontopathies.
  • (5) Hardened skin was markedly altered physiologically.
  • (6) A comparison was made of the kinetics of the carboxylation reaction of bicarbonate-magnesium-activated ribulose biphosphate carboxylase-oxygenase purified from cold-hardened and unhardened winter rye (Secale cereale L. cv.
  • (7) Rarely has there been a potential presidential candidate so battle-hardened and ready for combat.
  • (8) With its huge corps of jihadists hardened by years of fighting in Kashmir, it is arguably too big to confront at a time when Pakistan is battling the TTP.
  • (9) However, several systematic errors of the method have to be considered, such as the influence of fat present in the spongiosa in varying concentrations as well as beam hardening effects and different calibration methods.
  • (10) It is the sort of malevolent onslaught that has caused many hardened media pundits to quake.
  • (11) Values of elongation were more than 10% even after hardening heat treatment.
  • (12) It’s not an entirely controversy-free choice, considering that Harden hasn’t been a starter for more than two seasons, doesn’t have the best track record as far as being a team player goes and at times has been bad enough on defense that you could make an entire YouTube playlist devoted entirely to clips of him failing to make any defensive effort whatsoever.
  • (13) Compared to conventional CT, the new system should significantly improve contrast resolution of the image and provide better image quantification because of its lack of beam-hardening effects and its efficient implementation of energy-selective imaging methods such as dual-photon absorptiometry and K-edge subtraction with high-atomic-number (high-Z) contrast-enhancement elements.
  • (14) An earlier debt sustainability analysis was leaked in the days leading up to the Greek referendum and helped harden opposition to the (less draconian) terms then on offer.
  • (15) He also signalled a change in policy on welfare, hardening Labour’s opposition to the government’s welfare reforms, by pledging to oppose the cap on the total amount of benefits that a person can receive.
  • (16) The effects of DMSO and cooling on fertilization are likely to be due to zona hardening by cortical granule release and to disorganization of the egg cytoskeleton and plasma membrane.
  • (17) When present during the egg activation process monodansylcadaverine (MDC-a fluorescent lysine analog) inhibits eggshell hardening and at the same time becomes covalently incorporated into the eggshell.
  • (18) In rigor control, crossbridges were most regular in muscles that were stabilized before freezing by prefixation in glutaraldehyde followed by 'hardening' with neutralized tannic acid, so all nucleotide treatments were terminated by such fixation.
  • (19) It main advantage lies in the screening of arterial diseases (very reproductable and sensitive), monitoring of the treatment (unrelated to the operator), study of hardened arteries (diabetes).
  • (20) Evidence from several sources indicate that the catalytic action of the peroxidase is responsible for hardening the FE through the phenolic coupling of tyrosyl residues of the FE proteins.

Stiffen


Definition:

  • (v. t.) To make stiff; to make less pliant or flexible; as, to stiffen cloth with starch.
  • (v. t.) To inspissate; to make more thick or viscous; as, to stiffen paste.
  • (v. t.) To make torpid; to benumb.
  • (v. i.) To become stiff or stiffer, in any sense of the adjective.

Example Sentences:

  • (1) Rigidly fixing the pubic symphysis stiffened the model and resulted in principal stress patterns that did not reflect trabecular density or orientations as well as those of the deformable pubic symphysis model.
  • (2) The results indicate that during non-hypotensive haemorrhage aortic baroreceptor discharge is reduced by two mechanisms: firstly, via constriction and stiffening of aortic smooth muscle and, secondly, via direct effects of the compensatory mechanisms on the baroreceptors.
  • (3) It endures in the wound that is slow to heal, the disability that isn't going away, the dream that wakes you at night, or the stiffening in your spine when a car backfires down the street.
  • (4) Clinical specifications: On a local clinical level, the total toothlessness of the elderly presents as: a muscular hypotomy, a loss of the vertical dimension of occlusion, a marked increase in nasal and oral fissures, a stiffening of the articular structures, a great reduction of osteo-mucus in the residual edges, a spreading of the tongue which invades the oral cavity, a loss of occlusive memory, Bearing on therapy and teaching: good clinical observation, constant reference to the medical services, appropriate surgery prior to denture fitting.
  • (5) They also complained of exercise-induced stiffening and cramps of their leg muscles.
  • (6) The results indicate that, in chronic vasospasm, stiffening of the noncontractile component of the vasculature takes place as well as alterations in the contractile component, both of which presumably contribute to the shift in resting length-tension relationship and length-contraction relationship of the artery.
  • (7) More recently, local stiffening of vessels and inhomogeneities in local distensibility have been observed in the carotid artery bifurcation of borderline hypertensives, and the time-dependent variation in local distensibility and compliance has been studied.
  • (8) The results indicate density-related increases in membrane stiffness and viscosity, shear-thinning viscous behavior, and strain-stiffening elastic behavior.
  • (9) Drugs have little effect on arterial stiffening, whereas wave reflection can be markedly reduced by agents that dilate peripheral arteries.
  • (10) The most reliable ethanol withdrawal signs observed were: spontaneous seizure (n = 7), audiogenic seizure (n = 7), tremors (n = 6), tail stiffening (n = 10) and body rigidity (n = 9).
  • (11) A stiffened dithranol 0.5% ointment was found to be slightly more effective than the best paste hitherto employed.
  • (12) Because the microhardness of bone is very closely related to its stiffness, this finding indicates that microcalluses are likely to stiffen the trabeculae in which they are formed, even though they may surround unhealed fractures of the cancellous trabeculae.
  • (13) The curvature and stiffening of the ventral wall of the trachea can be achieved by the implantation of arched homograft cactilage taken from a tissue bank.
  • (14) There are two main patterns of PV curve in restrictive lung disorders--one due to stiffening of the lung (Fig.
  • (15) Finally, hypotheses are presented concerning the mechanism of membrane stiffening due to type II modifications of spectrin.
  • (16) There was always a rueful melancholy, stiffened by irony and leavened by humour about him.
  • (17) Records of acceleration following a displacement showed a series of decrementing swings which could last for more than 10 s. The imposition of sinusoidal torques generated by a printed motor showed that the system was non-linear for when small torques were used the resonant frequency rose indicating stiffening.
  • (18) Carbamazepine also alleviated alcohol withdrawal symptoms, especially heightened spontaneous activity, startle to noise, stereotyped chewing movements, and intermittent body stiffening.
  • (19) The metallic-weighted tips and stiffening introducing stylets create the potential for misplacement with potentially serious consequences.
  • (20) This increase encompasses both the clinically normal and hypertensive ranges of pressure and is due in part to arterial stiffening.

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