(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.
Pitch
Definition:
(n.) That point of the ground on which the ball pitches or lights when bowled.
(n.) A thick, black, lustrous, and sticky substance obtained by boiling down tar. It is used in calking the seams of ships; also in coating rope, canvas, wood, ironwork, etc., to preserve them.
(n.) See Pitchstone.
(n.) To cover over or smear with pitch.
(n.) Fig.: To darken; to blacken; to obscure.
(v. t.) To throw, generally with a definite aim or purpose; to cast; to hurl; to toss; as, to pitch quoits; to pitch hay; to pitch a ball.
(v. t.) To thrust or plant in the ground, as stakes or poles; hence, to fix firmly, as by means of poles; to establish; to arrange; as, to pitch a tent; to pitch a camp.
(v. t.) To set, face, or pave with rubble or undressed stones, as an embankment or a roadway.
(v. t.) To fix or set the tone of; as, to pitch a tune.
(v. t.) To set or fix, as a price or value.
(v. i.) To fix or place a tent or temporary habitation; to encamp.
(v. i.) To light; to settle; to come to rest from flight.
(v. i.) To fix one's choise; -- with on or upon.
(v. i.) To plunge or fall; esp., to fall forward; to decline or slope; as, to pitch from a precipice; the vessel pitches in a heavy sea; the field pitches toward the east.
(n.) A throw; a toss; a cast, as of something from the hand; as, a good pitch in quoits.
(n.) A point or peak; the extreme point or degree of elevation or depression; hence, a limit or bound.
(n.) Height; stature.
(n.) A descent; a fall; a thrusting down.
(n.) The point where a declivity begins; hence, the declivity itself; a descending slope; the degree or rate of descent or slope; slant; as, a steep pitch in the road; the pitch of a roof.
(n.) The relative acuteness or gravity of a tone, determined by the number of vibrations which produce it; the place of any tone upon a scale of high and low.
(n.) The limit of ground set to a miner who receives a share of the ore taken out.
(n.) The distance from center to center of any two adjacent teeth of gearing, measured on the pitch line; -- called also circular pitch.
(n.) The length, measured along the axis, of a complete turn of the thread of a screw, or of the helical lines of the blades of a screw propeller.
(n.) The distance between the centers of holes, as of rivet holes in boiler plates.
Example Sentences:
(1) The pattern of the stressor that causes a change in the pitch can be often identified only tentatively, if there is no additional information.
(2) Tottenham Hotspur’s £400m redevelopment of White Hart Lane could include a retractable grass pitch as the club explores the possibility of hosting a new NFL franchise.
(3) For each theory, a constraint on preformance is proposed based on interference between the "analytic" and "synthetic" pitch perception modes.
(4) Pitch forward head movements exerted the strongest effect.
(5) A grassed roof, solar panels to provide hot water, a small lake to catch rainwater which is then recycled, timber cladding for insulation ... even the pitch and floodlights are "deliberately positioned below the level of the surrounding terrain in order to reduce noise and light pollution for the neighbouring population".
(6) Frankly, the pair had been at each other ever since the Frenchman had come on to the pitch.
(7) For a while North Korea refused to play, but after delicate negotiations the players were persuaded back on to the pitch and the correct flag was displayed alongside the team photos.
(8) Some artists get thousands of songs pitched and they never know, so Beyoncé herself probably never heard it.
(9) Sometimes in the other team’s half, sometimes in front of his own box, sometimes as the last man.” Die Zeit singles out Bayern’s veteran midfielder Schweinsteiger for praise: “In this historic, dramatic and fascinating victory over Argentina , Schweinsteiger was the boss on the pitch.
(10) Recent STM studies of calf thymus DNA and poly(rA).poly(rU) have shown that the helical pitch and periodic alternation of major and minor grooves can be visualized and reliably measured.
(11) 11.10pm BST Apart from the stumbles in the sales pitch, it's still not clear how the Abbott government will secure most of its budget.
(12) The living wage needs to be pitched at a higher level than Osborne has suggested and paid for by increased productivity.
(13) Patrick Vieira, captain and on-pitch embodiment of Wenger’s reign, won the trophy with the last kick of his career at the club in the season when the Arsenal-United axis was finally broken by Chelsea at the top of the Premier League.
(14) No changes for either side, but Zinedine Zidane has been whispering into Cristiano Ronaldo's ear as he retakes the pitch.
(15) While numerous studies on infant perception have demonstrated the infant's ability to discriminate sounds having different frequencies, little research has evaluated more sophisticated pitch perception abilities such as perceptual constancy and perception of the missing fundamental.
(16) The club train on a council-owned facility and so, when the pitches are not playable or there are other things on, they sometimes have to look elsewhere to stage their sessions.
(17) Their lineup proved to be stacked, with breakouts from AL home run leader Chris Davis and doubles machine Manny Machado, who powered the O's through starting-pitching issues to hang in a tight division.
(18) The cavernous studio will play host to a half-sized football pitch, where pundits will demonstrate what players did or didn't do correctly and there are other technological innovations planned that marry broadband interactivity with live coverage.
(19) But 30 minutes before takeoff on our private jet – like a top-end Lexus limo with wings – actress Rosamund Pike has heroically stepped in for the year's hot meal ticket: an El Bulli supper, pitch perfect for a selection of rare champagne, devised by Adrià with Richard Geoffroy, Dom Pérignon's effervescent chef de cave.
(20) He is helped by constituency boundaries that skew the pitch in Labour’s favour, but even then the leap required looks improbable.