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bond

 [bond]
the linkage between atoms or radicals of a chemical compound, or the symbol representing this linkage and indicating the number and attachment of the valencies of an atom in constitutional formulas, represented by a pair of dots or a line between atoms, e.g., H—O—H, H—C≡C—H or H:O:H, H:C:::C:H.
coordinate covalent bond a covalent bond in which one of the bonded atoms furnishes both of the shared electrons.
covalent bond a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond), or three pairs of electrons (triple bond).
disulfide bond a strong covalent bond, —S—S—, important in linking polypeptide chains in proteins, the linkage arising as a result of the oxidation of the sulfhydryl (SH) groups of two molecules of cysteine.
high-energy phosphate bond an energy-rich phosphate linkage present in adenosine triphosphate (ATP), phosphocreatine, and certain other biological molecules. On hydrolysis at pH 7 it yields about 8000 calories per mole, in contrast to the 3000 calories yielded by phosphate esters. The bond stores energy that is used to drive biochemical processes, such as the synthesis of macromolecules, contraction of muscles, and the production of the electrical potentials for nerve conduction.
high-energy sulfur bond an energy-rich sulfur linkage, the most important of which occurs in the acetyl-CoA molecule, the main source of energy in fatty acid biosynthesis.
hydrogen bond a weak, primarily electrostatic, bond between a hydrogen atom bound to a highly electronegative element (such as oxygen or nitrogen) in a given molecule, or part of a molecule, and a second highly electronegative atom in another molecule or in a different part of the same molecule.
ionic bond a chemical bond in which electrons are transferred from one atom to another so that one bears a positive and the other a negative charge, the attraction between these opposite charges forming the bond.
peptide bond the —CO—NH— linkage formed between the carboxyl group of one amino acid and the amino group of another; it is an amide linkage joining amino acids to form peptides.

bond

(bond),
chemistry the force holding two neighboring atoms in place and resisting their separation; a bond is electrovalent if it consists of the attraction between oppositely charged groups, or covalent if it results from the sharing of one, two, or three pairs of electrons by the bonded atoms.
Chemistry A unit of chemical attraction; the ‘glue’ that maintains the molecules in their 3-D configuration—e.g., O2 has 2 bonds of affinity, which may be graphically represented by a short line or dash
Social medicine A binding force or influence; a cause of union; a uniting tie—e.g., bonds of fellowship

bond

(bond)
chemistry The force holding two neighboring atoms in place and resisting their separation; a bond is electrovalent if it consists of the attraction between oppositely charged groups, or covalent if it results from the sharing of one, two, or three pairs of electrons by the bonded atoms.

bond

  1. the force of mutual attraction that holds atoms together in molecules (see VAN DER WAALS INTERACTIONS and SULPHUR BRIDGE), such as high-energy bonds in ATP, weak hydrogen bonds in DNA, PEPTIDE BONDS and the disulphide bond of proteins.
  2. also called pair bond . The attraction which maintains a male/female relationship, for purposes of breeding, during the life cycle of some animals, mainly warmblooded vertebrates.

bond

(bond)
chemistry the force holding two neighboring atoms in place and resisting their separation.
References in periodicals archive ?
Issuers of qualified energy conservation bonds receive 70 percent of the interest paid to the borrower if the interest were determined at the tax credit bond rate determined under section 54A(b)(3) for qualified tax credit bonds.
Issuers should carefully consider the potential risks and rewards of issuing green bonds by undertaking a cost-benefit analysis.
British building society Nationwide on Friday reported that effective immediately, it is launching new issues of its fixed rate bonds and e-bonds.
Most investors want certainty with their investments and appreciate the fixed income generated by bonds. A favorite investment of many is the individual municipal bond.
The government bonds have been issued as a scheme to finance the state budget.
In an announcement, the ministry of finance said the Economic Coordination Committee (ECC) of the cabinet had decided that holders of bearer Rs40,000 Prize Bonds could avail the option to convert their bearer bonds into Premium Prize Bonds registered through 16 field offices of the State Bank of PakAistan (SBP) Banking Services Corporation and authorised braAnAches of six commercial banks - the National Bank of Pakistan, United Bank, MCB Bank, Allied Bank, Habib Bank and Bank Alfalah.
Pakistan had assured the FATF that prize bonds valuing Rs 40,000 would be registered.
Following the decision of Economic Coordination Committee's (ECC) of the cabinet, the holder of Rs40,000 denomination prize bond could take benefit of various facilities in registering their bonds, according to press statement issued by the Finance Ministry here.
The issuance of fresh bonds will be discontinued from all State Bank of Pakistan (SBP) offices with effect from February 15, according to an internal notification of the SBP.
--Approximately $258.0 million state clean water and drinking water revolving funds revenue bonds (New York City Municipal Water Finance Authority [NYCMWFA] projects - second resolution bonds) series 2018B subordinated state revolving fund (SRF) bonds (the NYCMWFA SRF Bonds).
With such a ladder, Paula will have $25,000 worth of bonds maturing each year.
Catena Media plc (STO:CTM), an online performance marketing company, on Wednesday announced that it intends to offer holders of its outstanding bonds 2016/2019 (the existing bonds) to exchange existing bonds into new bonds in connection with Catena Media's contemplated bond issue (the exchange offer).