(n.) A member of the solar system which usually moves in an elongated orbit, approaching very near to the sun in its perihelion, and receding to a very great distance from it at its aphelion. A comet commonly consists of three parts: the nucleus, the envelope, or coma, and the tail; but one or more of these parts is frequently wanting. See Illustration in Appendix.
Example Sentences:
(1) Comet Hale-Bopp graced the night skies in 1997 and was easily visible to the naked eye for months.
(2) Walden said the comparison with Comet was “ridiculous”.
(3) Its investments have included the airline Monarch, which has returned to profit after nearly collapsing a year ago, Morrisons convenience stores , and the now defunct Comet electrical goods chain.
(4) The lawyers have passed on the details of a tribunal judgment, published this month, which states that Chris Farrington, one of three Deloitte administrators, signed a letter to the secretary of state, Vince Cable, in November 2012 stating that there were "no proposed redundancies at present" at Comet .
(5) Estimates of what we will be able to see will improve over the next few days as astronomers track the comet's progress.
(6) Comet, the electricals retailer that has collapsed into administration, is the latest high street casualty, emblematic of thousands of shuttered shops up and down the land.
(7) 1933 Comet Battery store is founded by George Hollingbery in Hull, Yorkshire, employing two people who charge batteries for customers' wireless sets.
(8) We have used video image analysis to define appropriate "features" of the comet as a measure of DNA damage, and have quantified damage and repair by ionizing radiation.
(9) The authors' contribution to the problem is the observation of special thrombocyte aggregates surrounding neutrophils resembling comet tails, as well as the fact that the authors observed the formation of aggregates surrounding also lymphocytes and eosinophil cells.
(10) The pathognomonic sign is the "comet tail" that results from the crowding of vessels and bronchi as they enter the atelectatic region.
(11) Diallo was able to get the plate number off the women’s car but when he gave it to police he said he was told: “It’s a civil matter, there’s nothing we can do.” DC police spokeswoman Margarita Mikhaylova said they had “not received reports of specific threats” from businesses neighboring Comet Ping Pong.
(12) Following the revelations, it has emerged that Tims, who was news editor of the Surrey Comet between 1980 and 1988, was interviewed by an officer working for Operation Fernbridge, the criminal investigation examining claims of sexual abuse and grooming of children by prominent men, including senior MPs, top police officers and people with links to the royal household.
(13) Certain phenomena such as "centrifugal effect" and "comet effect" are examples of new problems generated by the advent of TBM.
(14) 2011 Kesa shareholders vote for the sale of loss-making Comet to private investment firm OpCapita for just £2 .
(15) This followed a string of closures in 2012 including Comet, JJB Sports, Game, Peacocks and Blacks Leisure.
(16) Comet is to close a further 125 stores – with the loss of 2,500 jobs – over the next few weeks, and it may shut down its entire business before the end of the year unless a buyer can be found, the administrator, Deloitte , has warned.
(17) Previous probes have included Lunar Prospector, which studied the moon's geology; Stardust, which returned a sample of material scooped from a comet's tail; and Mars Pathfinder, which deployed a tiny motorised robot vehicle on the Red Planet in 1997.
(18) We have studied incision-break formation in unstimulated and stimulated populations of human T-lymphocytes using the comet (single-cell microgel electrophoresis) assay.
(19) I just wanted to do some good and went about it the wrong way,” Edgar Welch, 28, told a reporter from the New York Times , adding: “I regret how I handled the situation.” Welch was arrested on Sunday at the Comet Ping Pong pizzeria, which became the subject of lurid conspiracy theories after it was mentioned in the personal emails of John Podesta , Hillary Clinton’s campaign chief, published by WikiLeaks.
(20) DNA containing breaks extends in the direction of the anode forming an image resembling the tail of a comet.
Envelope
Definition:
(n.) Alt. of Envelop
Example Sentences:
(1) The oral nerve endings of the palate, the buccal mucosa and the periodontal ligament of the cat canine were characterized by the presence of a cellular envelope which is the final form of the Henle sheath.
(2) Sequence variation in the gp116 component of cytomegalovirus envelope glycoprotein B was examined in 11 clinical strains and compared with variation in gp55.
(3) Thus, although ferric-enterochelin cannot penetrate the cell surface from outside, the complex that is formed within the envelope is transported normally into the cell.
(4) In addition, transitional macrophages with both positive granules and positive RER, nuclear envelope, negative Golgi apparatus (as in exudate- resident macrophages in vivo), and mature macrophages with peroxidatic activity only in the RER and nuclear envelope (as in resident macrophages in vivo) were found.
(5) Studies using serum from mice that had been immunized with synthetic peptides from the HIV envelope region suggested that this response is directed, at least in part, at several determinants of the transmembrane portion of the HIV envelope glycoprotein.
(6) The influence of exogenous gangliosides on the structure of the viral envelope was studied using fluorescent and photoactivatable phospholipids incorporated into the viral membrane.
(7) Cells infected with enveloped viruses are good systems for studying both aspects of protein glycosylation, since they contain a limited number of different glycoproteins, often with well-defined functions.
(8) The enzyme was removed from the cell envelope by treatment of the whole cells with sodium dodecyl sulfate, Triton X-100, sodium deoxycholate, and proteinase K.
(9) After virus release the major portion of precursors is assembled within an approximately 25 nm thick layer directly attached to the envelope.
(10) This single substitution was sufficient to abolish all detectable cleavage of the gp160 envelope precursor polypeptide as well as virus infectivity.
(11) The envelope glycoprotein of human immunodeficiency virus consists of two subunits, designated gp120 and gp41, derived from the cleavage of a precursor polypeptide gp160.
(12) Lipopolysaccharide content correlated significantly with drug uptake and sensitivity, and it appeared to determine the degree of penetration of the cell envelope by these chlorinated phenols.
(13) Matrix protein (36,500 daltons), one of the major polypeptides of the Escherichia coli cell envelope, is arranged in a periodic monolayer which covers the outer surface of the peptidoglycan.
(14) Translation of mRNA encoding vesicular stomatitis virus envelope glycoprotein G by as membrane-free ribosomal extract obtained from HeLa cells yielded a nonglycosylated protein (G1 (Mr 63,000).
(15) For both the single- and multiple-band signals, performance was best when the signal band(s) had a different envelope from the common envelope of the cue bands, and performance was worst when either the cue bands all had different envelopes, or the signal and cue bands all shared the same envelope.
(16) The data collected by several approaches reveal that assembly and maturation of vaccinia involves a tightly coupled sequence of interrelated events including the assembly of the envelope, post-translational cleavage of several virion polypeptides, and induction of the core enzymes.
(17) The relationship of vaccinia haemagglutinin (HA) to extracellular enveloped virus (EEV) was examined.
(18) April 17, 2013 The third floor isn't doing so well either: Rebecca Berg (@rebeccagberg) Capitol police email Senate offices: Police "are responding to a suspicious envelope on the third floor of the Hart Senate Office Building."
(19) Several fractions were extracted from the cell envelope (CE) of Neisseria meningitidis group B and characterized with regard to their morphology, antigenicity, protein composition, and toxicity.
(20) This preactivated merocyanine 540 was then mixed (in the dark) with tumour cells, normal cells and envelope viruses to assess its antiproliferative activity.