(a.) To make dark or black; to deprive of light; to obscure; as, a darkened room.
(a.) To render dim; to deprive of vision.
(a.) To cloud, obscure, or perplex; to render less clear or intelligible.
(a.) To cast a gloom upon.
(a.) To make foul; to sully; to tarnish.
(v. i.) To grow or darker.
Example Sentences:
(1) Immediate pigment darkening (IPD) occurs in human skin upon exposure to ultraviolet-A and visible radiation.
(2) There would never be a meeting in a darkened room where a winner was chosen just to fit an audience demographic or to create more entertaining telly.
(3) Each subject sat for 6 minutes in a darkened room and was told to memorize a list of words she heard form a tape.
(4) Normal, refractile spores were produced in each case; a portion of the barium spores lost refractility and darkened.
(5) Instead of coming to the bank, where we would be photographed coming in the front door, we were all to meet outside the McDonald's in Liverpool Street where we would be picked up in a people-carrier with darkened windows and driven in through the back of the bank.
(6) The final stage of germination was characterized by changes in the central spore region (core), notably phase darkening of the spore center and stainability with mercurochrome, and by a slight additional absorbancy decrease.
(7) Confluent patches of flat pigmentation appeared over the palpebral conjunctiva 18 weeks after the onset of treatment and showed progressive lateral enlargement and darkening.
(8) The 16 sites were qualitatively examined for evidence of resorption by either thinning or darkening of bone relative to the time immediately following surgery.
(9) Today's matches take place in a darkened hall within the stadium's towering walls, on the battlefields of multimillion-selling first-person shoot-'em-up Call of Duty .
(10) alpha-Melanocyte stimulating hormone (alpha-MSH) is a linear tridecapeptide (Ac-Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2) that has diverse physiological functions in addition to its reversible darkening of amphibian skins by stimulating melanosome dispersion within melanophores.
(11) 1) Asphyxia induced marked body colour darkening and bradycardia.
(12) The most striking feature of such neurons was darkening of their dendrites associated with abnormally high density cytoplasm that contained mitochondria with disrupted cristae.
(13) Braving darkening skies, they were initially in an upbeat mood, belting out the samba rhythm of carnival classic I'm Going to Celebrate.
(14) With official unemployment data today expected to show a further rise in the long-term unemployed, the TUC argues young people were some of the worst affected by Britain's deep recession and their outlook could darken further as public sector job losses intensify.
(15) beta-Adrenoceptor blocking agents, in contrast, inhibit catecholamine-induced darkening but have no effect on MSH-induced darkening.
(16) During the hibernation period, the epiphyseal catecholamine charge is well detected in the garden dormouse; it appears more important in darkened animals at 22 degrees C and much less in animals under continuous lighting.
(17) Melanocyte stimulating hormone-induced darkening or dispersion of the granules was reversed by each of these metabolites.
(18) Reactivation of the enzyme extracted from darkened leaves was achieved simply by adding a thiol compound.
(19) By analyzing the synaptic relationships of such "darkened" dendrites, connections in the upper dorsal horn can be deciphered.
(20) The specific activity of the light enzyme was consistently about twice that of the dark form when assayed at suboptimal (but physiological) pH (pH 7.0-7.3), and the former was also less sensitive to feedback inhibition by L-malate than that from darkened leaves under various conditions.
Overcast
Definition:
(v. t.) To cast or cover over; hence, to cloud; to darken.
(v. t.) To compute or rate too high.
(v. t.) To take long, loose stitches over (the raw edges of a seam) to prevent raveling.
Example Sentences:
(1) Techniques involving a cemented porcelain-fused-to-metal overcasting have often been successful in restoring the fixed partial denture to form and function.
(2) Murky crime drama Shetland (Tuesday, 9pm, BBC1) returns this week for a second series, revealing Shetland as the most eerie – and overcast – location on Earth.
(3) Smoke continued to swirl into an overcast sky more than an hour after the reported explosion as witnesses in the area gave accounts of feeling a shock wave.
(4) Winter depression, a form of seasonal affective disorder, is a common condition that increases in prevalence in northern areas and in regions with a high proportion of overcast fall and winter days.
(5) I like photographing overcast days and people looking sad.
(6) Ten males participated in the event which took place on a cool, overcast day and consisted of a 1.0-km swim, a 30-km cycle ride, and a 10-km run.
(7) Dentists have frequently used overcastings to avoid removal of the restoration.
(8) The morning is overcast – calm, cool and quiet, almost Zen-like.
(9) It’s a bleak, overcast day when the Guardian visits Rose Hill.
(10) It’s an overcast morning when I start my 155km walk along the Berlin Wall Trail, the Mauerweg, and the granite skies make the scarred, concrete remnants of the Wall along Bernauer Strasse look even more sinister than usual.
(11) But the clan believes that if the sky is overcast, the scars will continue to weep.
(12) Parts of Ohio are high-risk areas given the high percentage of overcast days.
(13) An overcasting was fabricated and was permanently cemented on each preparation.
(14) There was less activity on partly overcast days than on clear days.
(15) Sir Bobby Charlton, his own life in football so overcast by Manchester United's tragedy at Munich, handed the Liverpool legend Ian Rush a bouquet of roses as a symbol of fraternity.
(16) Those hoping for a bank holiday weekend to banish the bad weather should prepare for disappointment: the Met Office has warned that, while the torrential rain of recent days should subside, many areas could still see overcast skies, occasional showers and night-time temperatures falling below freezing.
(17) It claims to offer 99 Oregon beers on tap and, though I can’t personally vouch for all, the Ancestry Golden was light, the Yachats was smooth, the Block 15 was malty and the Oakshire Overcast Espresso Stout was a creamy, energising shot of success.
(18) The technique involves intradermal overcasting with monofilament non-resorbable suture covered with a double adhesive film which reduces strain and provides a therapeutic pressure; after ablation of the first film, it is replaced with adhesive films continuously for 2 months.
(19) Magnets glued to the backs of experienced pigeons often resulted in disorientation when the birds were released from distances of 17-31 miles (27-50 km) under total overcast, whereas no such disorientation occurred during similar releases under clear skies.
(20) On Wednesday, however, for at least one afternoon, all was right at AT&T Park, and that's because Lincecum tossed his second career no-hitter, bringing a bright finish to an overcast day in the Bay Area.