What's the difference between compound and lead?

Compound


Definition:

  • (n.) In the East Indies, an inclosure containing a house, outbuildings, etc.
  • (v. t.) To form or make by combining different elements, ingredients, or parts; as, to compound a medicine.
  • (v. t.) To put together, as elements, ingredients, or parts, in order to form a whole; to combine, mix, or unite.
  • (v. t.) To modify or change by combination with some other thing or part; to mingle with something else.
  • (v. t.) To compose; to constitute.
  • (v. t.) To settle amicably; to adjust by agreement; to compromise; to discharge from obligation upon terms different from those which were stipulated; as, to compound a debt.
  • (v. i.) To effect a composition; to come to terms of agreement; to agree; to settle by a compromise; -- usually followed by with before the person participating, and for before the thing compounded or the consideration.
  • (v. t.) Composed of two or more elements, ingredients, parts; produced by the union of several ingredients, parts, or things; composite; as, a compound word.
  • (n.) That which is compounded or formed by the union or mixture of elements ingredients, or parts; a combination of simples; a compound word; the result of composition.
  • (n.) A union of two or more ingredients in definite proportions by weight, so combined as to form a distinct substance; as, water is a compound of oxygen and hydrogen.

Example Sentences:

  • (1) These factors might account for the lower systemic bioavailability of these compounds.
  • (2) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
  • (3) These organic compounds were found to be stable on the sorbent tubes for at least seven days.
  • (4) Compound Z has the properties expected of an oxidized MPT precursor.
  • (5) Although Jeggo's Chinese hamster ovary cells were more responsive to mAMSA, novo still abrogated mAMSA toxicity in the mutant cells as well as in the parental Chinese hamster ovary cells 2,4-Dinitrophenol acted similarly to novo with respect to mAMSA killing, but neither compound reduced the ATP content of V79 cells.
  • (6) Recent data collected by the Games Outcomes Project and shared on the website Gamasutra backs up the view that crunch compounds these problems rather than solving them.
  • (7) There fore, the adverse effects may be induced by such quartz or silicon compounds.
  • (8) Fluorination with [18F]acetylhypofluorite yields 6-[18F]fluoro-L-dopa with 95% radiochemical purity; fluorination of the same substrate with [18F]F2 yields a mixture of all three structural isomers in a ratio of 70:16:14 for 6-, 5-, and 2-fluoro compounds.
  • (9) Mitonafide is the lead compound of a new series of antitumor drugs, the 3-Nitronaphthalimides, which have shown antineoplastic activity in vitro as well as in vivo.
  • (10) We have examined the activities of X, Y, and several related compounds as activators of macrophages.
  • (11) [125I]ET-1 binding to ETB receptors (nonselective to ET isopeptides) in cerebellar membranes was not inhibited by either of these compounds even at 100 microM.
  • (12) The individual classes of drugs are first treated separately to highlight specific aspects of their quantification, and this is followed by an overview of those methods permitting the concomitant analysis of two or more antiepileptic compounds.
  • (13) The remainder of the radioactivity appeared chromatographically just prior to the bisantrene peak, indicating that compounds more polar than the parent were present as transformation products.
  • (14) The ADAM derivative of carnitine was separated from decomposition products of the reagent and related compounds such as amino acid derivatives on a silica gel column eluted with methanol-5% aqueous SDS-phosphoric acid (990:10:1).
  • (15) Accidentally discovered nearly 40 years ago as the first true antidepressants, the MAOIs soon fell into disfavor due to concerns about toxicity and seemingly lesser efficacy compared with the newer tricyclic compounds.
  • (16) In a series of compounds with H2-antihistaminic activity, a conformational analysis was performed based on force field calculations.
  • (17) All three compounds were also very similar in their effects on [3H]5HT release from superfused rat striatal slices.
  • (18) A new compound, 5-bromo-2-(N,N-dimethylaminomethyl)furnan (IIc), is prepared in a similar way.
  • (19) On the basis of obtained data on the uniformity of chemical compounds of the secretion of glands belonging to different groups their common origin has been suggested.
  • (20) S-methyl-l-cysteine, 2-hydroxy-4-methiol butyric acid, S-adenosyl-l-methionine, and methionine peptides were the only compounds supporting growth, when substituted for methionine.

Lead


Definition:

  • (n.) An open way in an ice field.
  • (n.) A lode.
  • (n.) One of the elements, a heavy, pliable, inelastic metal, having a bright, bluish color, but easily tarnished. It is both malleable and ductile, though with little tenacity, and is used for tubes, sheets, bullets, etc. Its specific gravity is 11.37. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic weight, 206.4. Symbol Pb (L. Plumbum). It is chiefly obtained from the mineral galena, lead sulphide.
  • (n.) An article made of lead or an alloy of lead
  • (n.) A plummet or mass of lead, used in sounding at sea.
  • (n.) A thin strip of type metal, used to separate lines of type in printing.
  • (n.) Sheets or plates of lead used as a covering for roofs; hence, pl., a roof covered with lead sheets or terne plates.
  • (n.) A small cylinder of black lead or plumbago, used in pencils.
  • (v. t.) To cover, fill, or affect with lead; as, continuous firing leads the grooves of a rifle.
  • (v. t.) To place leads between the lines of; as, to lead a page; leaded matter.
  • (v. t.) To guide or conduct with the hand, or by means of some physical contact connection; as, a father leads a child; a jockey leads a horse with a halter; a dog leads a blind man.
  • (v. t.) To guide or conduct in a certain course, or to a certain place or end, by making the way known; to show the way, esp. by going with or going in advance of. Hence, figuratively: To direct; to counsel; to instruct; as, to lead a traveler; to lead a pupil.
  • (v. t.) To conduct or direct with authority; to have direction or charge of; as, to lead an army, an exploring party, or a search; to lead a political party.
  • (v. t.) To go or to be in advance of; to precede; hence, to be foremost or chief among; as, the big sloop led the fleet of yachts; the Guards led the attack; Demosthenes leads the orators of all ages.
  • (v. t.) To draw or direct by influence, whether good or bad; to prevail on; to induce; to entice; to allure; as, to lead one to espouse a righteous cause.
  • (v. t.) To guide or conduct one's self in, through, or along (a certain course); hence, to proceed in the way of; to follow the path or course of; to pass; to spend. Also, to cause (one) to proceed or follow in (a certain course).
  • (v. t.) To begin a game, round, or trick, with; as, to lead trumps; the double five was led.
  • (v. i.) To guide or conduct, as by accompanying, going before, showing, influencing, directing with authority, etc.; to have precedence or preeminence; to be first or chief; -- used in most of the senses of lead, v. t.
  • (v. t.) To tend or reach in a certain direction, or to a certain place; as, the path leads to the mill; gambling leads to other vices.
  • (n.) The act of leading or conducting; guidance; direction; as, to take the lead; to be under the lead of another.
  • (n.) precedence; advance position; also, the measure of precedence; as, the white horse had the lead; a lead of a boat's length, or of half a second.
  • (n.) The act or right of playing first in a game or round; the card suit, or piece, so played; as, your partner has the lead.
  • (n.) The course of a rope from end to end.
  • (n.) The width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke.
  • (n.) the distance of haul, as from a cutting to an embankment.
  • (n.) The action of a tooth, as a tooth of a wheel, in impelling another tooth or a pallet.

Example Sentences:

  • (1) Thirty-two patients (10 male, 22 female; age 37-82 years) undergoing maintenance haemodialysis or haemofiltration were studied by means of Holter device capable of simultaneously analysing rhythm and ST-changes in three leads.
  • (2) Herpesviruses such as EBV, HSV, and human herpes virus-6 (HHV-6) have a marked tropism for cells of the immune system and therefore infection by these viruses may result in alterations of immune functions, leading at times to a state of immunosuppression.
  • (3) LHRH therapy leads to higher plasma LH levels and a lower FSH in response to an intravenous LHRH test.
  • (4) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
  • (5) These are typically runaway processes in which global temperature rises lead to further releases of CO², which in turn brings about more global warming.
  • (6) Results indicated a .85 probability that Directive Guidance would be followed by Cooperation; a .67 probability that Permissiveness would lead to Noncooperation; and a .97 likelihood that Coerciveness would lead to either Noncooperation or Resistance.
  • (7) It would be fascinating to see if greater local government involvement in running the NHS in places such as Manchester leads over the longer term to a noticeable difference in the financial outlook.
  • (8) The Frenchman’s 65th-minute goal was a fifth for United and redemptive after he conceded the penalty from which CSKA Moscow took a first-half lead.
  • (9) Our results indicate that increasing the delay for more than 8 days following irradiation and TCD syngeneic BMT leads to a rapid loss of the ability to achieve alloengraftment by non-TCD allogeneic bone marrow.
  • (10) report the complications registered, in particular: lead's displacing 6.2%, run away 0.7%, marked hyperthermya 0.0%, haemorrage 0.4%, wound dehiscence 0.3%, asectic necrosis by decubitus 5%, septic necrosis 0.3%, perforation of the heart 0.2%, pulmonary embolism 0.1%.
  • (11) The availability and success of changes in reproductive technology should lead to a reappraisal of the indications for hysterectomy, especially in young women.
  • (12) Photoirradiation of F1 in the presence of the analog leads to inactivation depending linearly on the incorporation of label.
  • (13) In patients with coronary artery disease, electrocardiographic signs of left atrial enlargement (LAE-negative P wave deflection greater than or equal to 1 mm2 in lead V1) are associated with increased left ventricular end diastolic pressure (LVEDP).
  • (14) The new Somali government has enthusiastically embraced the new deal and created a taskforce, bringing together the government, lead donors (the US, UK, EU, Norway and Denmark), the World Bank and civil society.
  • (15) Suggested is a carefully prepared system of cycling videocassettes, to effect the dissemination of current medical information from leading medical centers to medical and paramedical people in the "bush".
  • (16) Mitonafide is the lead compound of a new series of antitumor drugs, the 3-Nitronaphthalimides, which have shown antineoplastic activity in vitro as well as in vivo.
  • (17) The presently available data allow us to draw the following conclusions: 1) G proteins play a mediatory role in the transmission of the signal(s) generated upon receptor occupancy that leads to the observed cytoskeletal changes.
  • (18) In the case presented, overdistension of a jejunostomy catheter balloon led to intestinal obstruction and pressure necrosis (of the small bowel), with subsequent abscess formation leading to death from septicemia.
  • (19) This is rapidly followed by a gamut of changes leading to demyelination.
  • (20) In crosses between inverted repeats, a single intrachromatid reciprocal exchange leads to inversion of the sequence between the crossover sites and recovery of both genes involved in the event.