Related Words

Bonded: Protected or guaranteed by a bond, usually referring to the protection of passenger's funds.

Bonded Sender: A private email-registration service, owned by email vendor Ironport, which allows bulk emailers who agree to follow stringent email practices and to post a monetary bond to bypass email fil . . . View Full Definition

Case Bonded: A propellant grain cast directly into a chamber and made to bond securely to the chamber wall.

Van Der Waals Force: A force acting between nonbonded atoms or molecules. Includes dipole-dipole, dipole-induced dipole, and London forces.

Van Der Waals Radius: One half the distance between two nonbonded atoms, when attractive and repulsive forces between the atoms are balanced.

T-Shape: A molecular shape that results when there are 3 bonds and 2 lone pairs around the central atom in the molecule. The atoms bonded to the central atom lie at the ends of a 'T' with 90° angles . . . View Full Definition

Sigma Bond: In the valence bond theory, a sigma bond is a valence bond that is symmetrical around the imaginary line between the bonded atoms. Most single bonds are sigma bonds.

Glued Laminated Beam (Glulam): A structural beam composed of wood laminations or lams. The lams are pressure bonded with adhesives to attain a typical thickness of 1 ½' . (It looks like 5 or more 2 X 4's are glued together).

Structural Formula: A structural formula is a diagram that shows how the atoms in a molecule are bonded together. Atoms are represented by their element symbols and covalent bonds are represented by lines. The . . . View Full Definition

Tetrahedral: A molecular shape that results when there are four bonds and no lone pairs around the central atom in the molecule. The atoms bonded to the central atom lie at the corners of a tetrahedron w . . . View Full Definition