(a.) Destitute, or partially destitute, of light; not receiving, reflecting, or radiating light; wholly or partially black, or of some deep shade of color; not light-colored; as, a dark room; a dark day; dark cloth; dark paint; a dark complexion.
(a.) Not clear to the understanding; not easily seen through; obscure; mysterious; hidden.
(a.) Destitute of knowledge and culture; in moral or intellectual darkness; unrefined; ignorant.
(a.) Evincing black or foul traits of character; vile; wicked; atrocious; as, a dark villain; a dark deed.
(n.) Absence of light; darkness; obscurity; a place where there is little or no light.
(n.) The condition of ignorance; gloom; secrecy.
(n.) A dark shade or dark passage in a painting, engraving, or the like; as, the light and darks are well contrasted.
(v. t.) To darken to obscure.
Example Sentences:
(1) And that, as much as the “on water, operational” considerations, is why we are being kept in the dark.
(2) The first group was reared in complete darkness while the second one was subjected to permanent noise.
(3) In the dark the 6-azidoflavoproteins are quite stable, except for L-lactate oxidase, where spontaneous conversion to the 6-amino-FMN enzyme occurs slowly at pH 7.
(4) Most notably, retroperitoneal lymph nodes in rabbits remained dark blue up to 28 days after hindlimb endolymphatic instillation of liposomal patent blue.
(5) In the dark cortical zone of the nodes (III group) there occur tissue basophils (mast cells), that, together with increasing number of acidophilic granulocytes and appearance of neutrophilic cells, demonstrates that there is an inflammatory reaction in the organ studied as a response to the lymphocytic suspension injected.
(6) Urinalysis revealed a low pH, increased ketones and bilirubin excretion, dark yellowish change in color, the appearance of "leaflet-shaped" crystals and increased red blood cells and epithelial cells in the urinary sediment, increased water intake, decreased specific gravity and decreased sodium, potassium and chloride in the urine.
(7) We were searching for spontaneous and positional nystagmus in 5 positions with open eyes in darkness and with closed eyes.
(8) Previous FTIR measurements have identified several tyrosine residues that change their absorption characteristics between light-adapted BR and dark-adapted BR, or between intermediates K and M [Dollinger, G., Eisenstein, L., Lin, S.-L., Nakanishi, K., Odashima, K., & Termini, J.
(9) Steady state levels of chloroplast mRNA encoding the core PSII polypeptides remain nearly constant in the light or the dark and are not affected by the developmental stage of the plastid.
(10) The second triplet, which was stable in the dark at 4.2 K following illumination, was assigned to the radical pair Donor+I-.
(11) The results indicate that CRALBP X 11-cis-retinol is sufficiently stereoselective in its binding properties to warrant consideration as a component of the mechanism for the generation of 11-cis-retinaldehyde in the dark.
(12) Although the Ca2+-independent mechanism accounts for about two thirds of the total acetylcholine release in the dark, the amount of acetylcholine released in this way is small compared with the release of acetylcholine triggered by stimulation of the retina with light.
(13) The extracellular concentration of GABA is probably high in prolonged darkness, and it is low after prolonged light exposure.
(14) In lettuce, the presence of 2,4-D in the light lowered the concentration of total Hg (or MeHg) required to reduce growth by 50%, about 13 times relative to that in the dark (i.e., it sensitized the cells).
(15) This suggests that many retinal ganglion cells continue to discharge in total darkness for long periods.
(16) In darkness, raising the concentration of K in the fluid of perfusion gives an increase of the efflux of (86)Rb and increasing the extracellular concentration of Ca yields a retention.
(17) Upon illumination, a dark-adapted photosynthetic sample shows time-dependent changes in chlorophyll (Chl) a fluorescence yield, known as the Kautsky phenomenon or the OIDPS transient.
(18) One elderly woman was left alone in the dark for hours unable to find food or drink.
(19) These observations indicated a novel mechanism that in the absence of light-dark schedule, mothers taught the circadian rhythm to the pups as they raised them.
(20) It was observed that the circadian rhythm was disrupted by injections of lithium at the beginning of the light as well as the dark phase of the LD cycle.
Dour
Definition:
(a.) Hard; inflexible; obstinate; sour in aspect; hardy; bold.
Example Sentences:
(1) Reports from the scenes of Muslim Brotherhood and Freedom and Justice Party rallies conveyed a dour mood in Cairo, while active clashes were reported in both coastal cities and upper Egypt.
(2) There’s hard work and dour activities and that’s what I’m going to be doing.” Corbyn and his deputy, Tom Watson , are expected to make regular – and more public – visits to Scotland to help Scottish Labour avoid a further rout at next May’s Holyrood elections; the latest opinion polls suggest the SNP is on course to win a second successive overall majority with its approval ratings at more than 50%.
(3) However, as we watch Blade Runner , Deckard doesn’t feel like a replicant; he is dour and unengaged, but lacks his victims’ detached innocence, their staccato puzzlement at their own untrained feelings.
(4) Reith, “his dour handsome face scarred like that of a villain in a melodrama”, was “a strange shepherd for such a mixed, bohemian flock … he had under his aegis a bevy of ex-soldiers, ex-actors, ex-adventurers which … even a Dartmoor prison governor might have had difficulty in controlling”.
(5) The dour Zenawi could not resist a swipe at western pundits who had once written off Africa.
(6) A spectacular fall from grace on the pitch – from first to seventh, playing dour football that is anathema to fans who feasted on success throughout the Ferguson era – will also lead to renewed scrutiny of the club's controversial US owners, the Glazer family , away from it.
(7) The seafront was grey and almost deserted; outside the dour concrete venue, there was a single delegate having a blustery cigarette.
(8) But it was in westerns that Peck's dour integrity showed itself best: unshaven and tough in Yellow Sky (1948); a dude learning to adapt to the west in The Big Country (1958); and obsessively after the men who raped and killed his wife in The Bravados (1958).
(9) On Tuesday, the bunkhouse breakfast room felt like a hunting lodge, with wives and girlfriends serving meals while working-class men with beards, flannel shirts and dour expressions milled about.
(10) Milosevic himself, until then a dour and orthodox communist, appeared to realise his gift for rhetoric and the power of nationalism.
(11) Saki (Hector Hugh Munro, 1870-1916) was raised by his strict, dour aunts and grandmother, and was gay but closeted all his life – for good reason, since homosexual acts between men were still illegal.
(12) Fun is fun, and please don't try and stop people having fun, things are dour enough as it is."
(13) Because there is no ‘message’ – there’s just Jeremy!” Membership Event: Guardian Live | The future of Labour: meet the next leader By the end of the night, even the dour stewards were applauding.
(14) This late action made the preceding dour fare seem all the more disappointing.
(15) We were told he would be the dour, humourless lefty; and again he has been a challenge to expectations.
(16) We talk some more about Mad Men , about: "The swirl and sound and fury of it… For a show that is as dour and moody and pendulous as ours, we have fun."
(17) George averaged only 14.5 points and six rebounds in the first two games of the series and started slowly against on Friday before gathering pace in the dour encounter.
(18) The two TV presenters broadcasting from the crowd – she in a gold-spangled minidress and rigid curls, him dour in black tie – shot baleful looks in his direction as he carried on honking.
(19) Murray is a bit dour true to his Scottish nature but he is an excellent player.
(20) Jeremy Corbyn conceded that it would not be easy to revive Labour’s position in Scotland but promised “hard work and dour activities” as he made his first visit to the nation since his election as party leader.