What's the difference between leach and leech?

Leach


Definition:

  • (n.) See 3d Leech.
  • (n.) A quantity of wood ashes, through which water passes, and thus imbibes the alkali.
  • (n.) A tub or vat for leaching ashes, bark, etc.
  • (v. t.) To remove the soluble constituents from by subjecting to the action of percolating water or other liquid; as, to leach ashes or coffee.
  • (v. t.) To dissolve out; -- often used with out; as, to leach out alkali from ashes.
  • (v. i.) To part with soluble constituents by percolation.
  • (n.) See Leech, a physician.

Example Sentences:

  • (1) Updated at 2.53pm GMT 2.48pm GMT 'Tricky job, well done' - IoD Graeme Leach , chief economist at the Institute of Directors, said: This was a tricky job, well done by George Osborne.
  • (2) In this study two soft coals obtained from mines in which workers had high and low incidences of CWP were leached with aqueous base and acid to remove their acidic and basic components.
  • (3) Leaching the lyophilized mitochondrial fraction with either hexane or acetone increased substantially the yields of the metabolites.
  • (4) Worse, the CFL contains mercury, which according to the EU's own regulations cannot be discarded in ordinary waste, lest the mercury leach into the water supply.
  • (5) A steady decline in the incidence with an increase in the preponderance of male cases was observed toward the west, reaching the lowest figures (male: 17.2 cases per 100,000 population; female: 5.5 per 100,000) in the Caspian rain belt, with its heavily leached soils and somewhat subtropical characteristcs.
  • (6) In spite of the leaching and contamination effects described in the literature--even for chrysotile fibrils taken from the lung, elemental spectra do not differ essentially from the asbestos standard.
  • (7) Contamination of cells by impurity atoms that may leach from electrodes was measured by atomic-absorption spectrophotometry and found to be negligible.
  • (8) "The UK economy faces a difficult period over the coming years, but if the government holds firm with the implementation of the spending review, long-term growth and employment prospects will be significantly improved," said Graeme Leach, chief economist and director of policy at the IoD.
  • (9) Once the pollution has ceased, it would appear that the arsenic is rapidly leached away, with a return to ecological normality this recovery was surprisingly rapid and complete.
  • (10) The surface is stabilized, i.e., leaching is retarded, by the rapid Ca,P-accumulation within the silica structure before apatite crystals are observed on the surface.
  • (11) In Dr Leach's book, a 13-year-old talking about the fall-out from her parents' break-up says: "I felt I'd vanished."
  • (12) Some cells, however, showed evidence that intracytoplasmic materials had been leached from the cells.
  • (13) Diethyl phthalate in the desiccant in 100-count bottles of brand A levothyroxine sodium tablets appeared to have leached into the tablets.
  • (14) With the leach tank incident in December there were questions raised about our environmental performance.
  • (15) The tendency of composites to leach filler elements almost linearly with time, could be used to generate a constant release rate of such therapeutic elements over time.
  • (16) Dissolution is incongruent, probably because most of the leached species can derive both from the matrix (polysalt gel) and the partly reacted glass particles.
  • (17) There was no evidence of energy-dependent extrusion of water or ions from either equilibrated rat or rabbit renal cortical slices leached at 0.5 degrees C and then reincubated at 25 degrees C in choline Ringer.7.
  • (18) Leach has also just been appointed advisory chair of next year's Guardian Edinburgh International Television Festival, reinforcing the sense that she and Twofour have earned their place at the TV industry's top table.
  • (19) Upon harvest (three months after application), a total of 49.2% of the applied radiocarbon was recovered: 2.0% in the plants, 46.9% in the soil, and 0.3% in the leaching water (depth greater than 50 cm); less than 0.1% was in the grains (0.464 ppm).
  • (20) The power requirements for initial leaching conditions were also calculated.

Leech


Definition:

  • (n.) See 2d Leach.
  • (v. t.) See Leach, v. t.
  • (n.) The border or edge at the side of a sail.
  • (n.) A physician or surgeon; a professor of the art of healing.
  • (n.) Any one of numerous genera and species of annulose worms, belonging to the order Hirudinea, or Bdelloidea, esp. those species used in medicine, as Hirudo medicinalis of Europe, and allied species.
  • (n.) A glass tube of peculiar construction, adapted for drawing blood from a scarified part by means of a vacuum.
  • (v. t.) To treat as a surgeon; to doctor; as, to leech wounds.
  • (v. t.) To bleed by the use of leeches.

Example Sentences:

  • (1) Leech saliva inhibits superoxide production by neutrophils stimulated by tetradecanoyl phorbol acetate or polyhistidine.
  • (2) We compared the molecular nature of the rat brain opiate receptor with that of the invertebrate leech, Haemopis marmorata, and the protozoan, Tetrahymena, in order to examine the issue of apparent receptor heterogeneity with respect to biochemical structure.
  • (3) Serotonin plays an obligatory role in the initiation and expression of leech feeding behavior by its differential modulation of central neuronal networks and peripheral glands and muscles.
  • (4) Leech-treated flaps showed poorer reperfusion than untreated flaps.
  • (5) Thus, even though normal leech development comprises a nearly invariant cell lineage, lineage relationships are open to considerable reorganization under experimental conditions.
  • (6) When I first saw the video I instantly recognised something about the voice,” Leech said.
  • (7) Touch (T) sensory neurons in the leech innervate defined regions of skin and synapse on other neurons, including other T cells, within the ganglionic neuropil.
  • (8) Sensory processing in the local bending reflex of the leech (Hirudo medicinalis) was studied by examining the input-output relations of the reflex.
  • (9) Blood meal size increases slightly with leech size: 8.4 g for 1-g leeches and 9.7 g for 2-g leeches.
  • (10) Leech AP neurons react to axotomy by increasing excitability and resting potential of the cell body membrane.
  • (11) Antistasin is a 119-amino acid protein initially isolated from salivary glands of the Mexican leech, Haementeria officinalis, that exhibits potent anticoagulant properties resulting from selective inhibition of blood coagulation factor Xa.
  • (12) Mark Leech, editor of ConVerse , the national newspaper for prisoners, said the former MP should expect "to find himself in a prison reception that is cramped, cold and busy – with up to 200 prisoners being processed each day".
  • (13) The use of leeches and blood letting of 100 years ago may seem absurd by today's standards.
  • (14) We were able to record large signals without averaging from barnacle and leech neurons.
  • (15) There are at least three hirudin transcripts detectable in leech RNAs that are different in size, site of synthesis, inducibility by starvation, and relationship to hirudin activity.
  • (16) A combined action of acetylcholine and serotonin is demonstrated to produce, in ultrastructure of the Retzius neuron of the leech, changes similar to those resulted from synaptic activation.
  • (17) The authors conclude that the use of medicinal leeches shows promise as a safe and effective method of providing temporary venous drainage in replanted digits.
  • (18) The possibility of leech endoparasitism should not be overlooked in people presenting with epistaxis or hemoptysis and a history of recent contact with fresh water lakes or streams in tropical regions.
  • (19) Individual mechanosensory neurons in the leech segmental ganglia were eliminated in vivo by intracellular Pronase injection.
  • (20) 3), was developed using the powerful musculature of the common leech (Haemopis sanguisuga).

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