(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.
Hopeless
Definition:
(a.) Destitute of hope; having no expectation of good; despairing.
(a.) Giving no ground of hope; promising nothing desirable; desperate; as, a hopeless cause.
(a.) Unhoped for; despaired of.
Example Sentences:
(1) Its experiments are so hopelessly flawed that the results are meaningless."
(2) They were preceded by the publication of The Success and Failure of Picasso (1965) and Art and Revolution: Ernst Neizvestny and the Role of the Artist in the USSR (1969); in one, he made a hopeless mess of Picasso’s later career, though he was not alone in this; in the other, he elevated a brave dissident artist beyond his talents.
(3) Rather than ruthlessly efficient, I have found them sweet and a bit hopeless."
(4) Alcohol and drugs are influential in providing a feeling of hopelessness by their toxic effects, by disruption of interpersonal relationships and social supports, and, possibly, by manipulating neurotransmitters responsible for mood and judgment.
(5) The authors document the first 19 months of a service dedicated to the care of hopelessly ill patients in a teaching hospital.
(6) "); hopeless self-pity ("Nobody said anything to me about Billy ... all day long") and rage ("You want to put a bench in the park in Billy's name?
(7) Winston Churchill, when he was offered the role of minister of the local government board in 1906, commented: "There is no place more laborious, more anxious, more thankless, more cloaked with petty and even squalid detail, more full of hopeless and insoluble difficulties."
(8) It’s all very well for Hopeless to make fun of me saying Brexit means Brexit,” said Hapless, haplessly.
(9) Meanwhile, the dance music that sells in any quantity is just hopeless.
(10) Both depression and hopelessness were sensitive to changes in suicide risk during the one-month follow-up.
(11) Many aspects of the theory's descriptive claims about depressive thinking have been substantiated empirically, including (a) increased negativity of cognitions about the self, (b) increased hopelessness, (c) specificity of themes of loss to depressive syndromes rather than psychopathology in general, and (d) mood-congruent recall.
(12) In addition, the paper presents the author's experience with human vitreous transplantation by the 'open sky' transcorneal technique for otherwise hopeless vitreous opacities.
(13) The relationship between depression and suicide disappears when hopelessness is taken into account.
(14) The performance of controls and DST escapers was related to depth of semantic processing, whereas performance of DST suppressors varied inversely with degree of felt hopelessness.
(15) The question of vulnerability to DSH is discussed as well as the possibility of using measures of hopelessness and intropunitive hostility to identify those at greater risk of repetition.
(16) But the Labour leader has only himself to blame because of his hopelessly woolly response to a question on this in his BBC interview on Monday.
(17) "It was a certain kind of titillation the shop offered," the critic Matthew Collings has written, "sexual but also hopeless, destructive, foolish, funny, sad."
(18) Shinji Kagawa could not make any real difference and Marouane Fellaini continues to look hopelessly out of his depth.
(19) Anhedonia, diurnal variation, hopelessness, psychomotor retardation, and delusions increased with age; depressed appearance, low self-esteem, and somatic complaints decreased with age.
(20) Four cases received no treatment but were recalled, and twelve perforations showed a size and location hopeless for repair; the teeth were therefore extracted.