(n.) A flat, circular plate; as, a disk of metal or paper.
(n.) The circular figure of a celestial body, as seen projected of the heavens.
(n.) A circular structure either in plants or animals; as, a blood disk; germinal disk, etc.
(n.) The whole surface of a leaf.
(n.) The central part of a radiate compound flower, as in sunflower.
(n.) A part of the receptacle enlarged or expanded under, or around, or even on top of, the pistil.
(n.) The anterior surface or oral area of coelenterate animals, as of sea anemones.
(n.) The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk.
(n.) In owls, the space around the eyes.
Example Sentences:
(1) These findings suggest that clonidine transdermal disks lower blood pressure in hypertensive patients, but produce local skin lesions and general side effects.
(2) These observations suggest that the liver secretes disk-shaped lipid bilayer particles which represent both the nascent form of high density lipoproteins and preferred substrate for lecithin-cholesterol acyltransferase.
(3) Opsin becomes incorporated into the disk membrane by a process of membrane expansion and fusion to form the flattened disks of the outer segment.
(4) Somatic and functional antigens of Dictyocaulus filaria were comparatively studied by means of disk electrophoresis.
(5) We performed a prospective study on 68 eyes of 68 patients to compare the vertical cup-disk ratio obtained with the video-ophthalmograph to that obtained with manual analysis of black-and-white stereoscopic photographs.
(6) Visible light activates a large guanosine cyclic 3',5'-phosphate (cGMP)- and phosphodiesterase (PDE)-dependent infrared light-scattering change in suspensions of photoreceptor disk membranes.
(7) Three disks of different sizes (10, 25, and 45 mm in diameter) were attached to the edge of the baresthesiometer, and pressures of 1, 3 and 5 kg were applied to the 10 mm disk, and 1, 3, 5, and 7 kg to the other disks.
(8) The hemolytic characteristics of 14 different polydimethyl-siloxane materials were studied, using a rotating disk device to shear whole human blood for 6000 sec.
(9) These optic disk anomalies occurred bilaterally with some inter- and intra-individual variable expressivity.
(10) This is the first reported case, to the best of my knowledge, of disk neovascularization occurring after intravenously injected, crushed, unfiltered, methylphenidate HCl tablets.
(11) We have investigated the relationship between rhodopsin photochemical function and the retinal rod outer segment (ROS) disk membrane lipid composition using flash photolysis techniques.
(12) We found that the Na-Ca exchanger is distributed throughout all membranes in contact with the extracellular space, including the sarcolemma, the transverse tubules (T-tubules), and the intercalated disks.
(13) The minimal inhibitory concentration of netilmicin determined by the agar dilution method was correlated with the disk diffusion zone of inhibition against 322 clinical isolates.
(14) The initiation step consisting of the binding of RNA with the 36S disk of protein was easily accomplished.
(15) The state of the intervertebral disks, intervertebral joints and cerebrospinal canal in degenerative vertebral diseases was assessed.
(16) It is concluded that although a rapid automated system for antibiotic sensitivity testing is desirable, the conventional disk agar diffusion method is easier to perform, more reliable, and a less expensive procedure for antibiotic sensitivity determination.
(17) The diagnostic accuracy of CT in cases of lumbar disk prolapse was investigated on the basis of a group of 158 of our own patients who were divided into three separate groups.
(18) Disk position was assessed inaccurately in either plane in patients with severe degenerative joint disease.
(19) Based on the morphology and magnetic anisotropy of the rod outer segment, the major phospholipid peak is attributed to the flat part of the disk membranes while the phospholipids of the plasma membrane are thought to contribute only to the minor peak.
(20) QC range for H. Influenzae ATCC 49247 were established using multiple HTM agar and broth base lots, three disk lots for each drug, and a number of test replicates consistent with the National Committee for Clinical Laboratory Standards M23-T guideline.
Dusk
Definition:
(a.) Tending to darkness or blackness; moderately dark or black; dusky.
(n.) Imperfect obscurity; a middle degree between light and darkness; twilight; as, the dusk of the evening.
(n.) A darkish color.
(v. t.) To make dusk.
(v. i.) To grow dusk.
Example Sentences:
(1) Undaunted by the sickening swell of the ocean and wrapped up against the chilly wind, Straneo, of Woods Hole Oceanographic Institution, one of the world's leading oceanographic research centres, continues to take measurements from the waters as the long Arctic dusk falls.
(2) Mosquito infection occurred primarily around dusk, the same period during which A. robustus and E. serrulatus were most abundant near the surface of the pond.
(3) Activity was stimulated by the change in illumination levels at dawn and dusk.
(4) The time-related incidence of these cells entities--the appearance of "dusk" and "bright" cells at 5 min, transitory domination of "bright" cells and the nadir of "dusk" cells at 20 min, sporadic recognition of "bright" cells, lack of "dusk" cells at 45 min and the absence of both cell forms at 180 min--displayed that LP-reactive response promptly appeared and rapidly ceased.
(5) For all its posing and grooming, there are no nightclubs - the only flashing lights along this coast are the glowworms strobing across the grass at dusk.
(6) Ten minutes' walk away is the wonderful Blaise Hamlet (open dawn until dusk).
(7) I shall never forget a cherry tree in Kyoto lit with braziers at dusk.
(8) (Nine-year-olds were discovered picking spring onions from dawn till dusk in freezing weather in Worcestershire last year.)
(9) Sixty-nine patients reported no symptoms of night blindness and 116 patients claimed no visual field changes; 90 stated that they saw better at dusk.
(10) Her most memorable film role to date has been dancing with a python in a state of undress in the vampire movie From Dusk Till Dawn.
(11) "Hegel once said wisdom was like an owl, and that it took flight only at dusk.
(12) The final picture shows Blackpool Tower at dusk with the seafront illuminations.
(13) Mighty Deer Stalker Tough 10km off-road (and very muddy) run in Peeblesshire, Scotland, which starts at dusk.
(14) As dusk fell across the city a motorcade of flashing lights and sirens escorted him to the airport, where he thanked his hosts and organisers and the vice-president, Joe Biden, escorted him to the plane.
(15) In Fourier's ideal world, one might kick off with gardening in the morning, try some politics, shift on to art around lunchtime, spend the afternoon teaching and wind things up with a go at chemistry at dusk.
(16) The city, one of the largest Kurdish bastions of resistance to Isis in northern Syria, was shaken by heavy shelling from the advancing militants at dusk on Friday, sending plumes of smoke skywards and more refugees scrambling across the border into Turkey .
(17) A reason for the higher amplitude variation of melatonin in the natural lighting conditions may be the gradual changes of illuminance at dawn and dusk.
(18) At dusk on 10 September last year, a few weeks after the juvenile birds had successfully left their nest, the 9.5g tag on Sky’s leg abruptly stopped transmitting.
(19) His offices released statements about meetings with cabinet ministers to discuss issues such as the availability of basic food items during Ramadan when Muslims feast on food after a day of dawn-to-dusk fasting.
(20) "Fabrice always wanted it to be dusk," said Jenna Thiam, who plays 19-year-old Léna, one of the twin girls at the centre of the drama.