Look up: Pi-Bond

1. pi bond
   ( bond) Compare with sigma bond. In the valence bond theory, a pi bond is a valence bond formed by side-by-side overlap of p orbitals on two bonded atoms. In most multiple bonds, the first bond is a sigma bond and all of the others are pi bonds.
   Found on http://antoine.frostburg.edu/chem/senese
   
   
2. pi bond
   <chemistry> A bond formed from the overlap of two parallel p-orbitals. ... (09 Jan 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
3. pi bond
   in chemistry, a cohesive interaction between two atoms and a pair of electrons that occupy an orbital located in two regions roughly parallel to the ... [7 related articles]
   Found on http://www.britannica.com/eb/a-z/p/63
   
   
4. Pi bond
   In chemistry, `pi bonds` (`Ï€ bonds`) are covalent chemical bonds where two lobes of one involved electron orbital overlap two lobes of the other involved electron orbital. Only one of the orbital`s nodal planes passes through both of the involved nuclei. The Greek letter `Ï€` in their name re...
   Found on http://en.wikipedia.org/wiki/Pi_bond
   
   
5. Pi-Bond
   A chemical bond formed by the indirect overlap of two atomic orbitals. I don't think I actually want to get into this, but the two bonds in a double bond are not the same; one is a sigma bond, formed by the direct Head-to-Head' overlap of two atomic orbitals, and this is considerably stronger than the second one, which is a pi-bond.'...
   Found on http://www.kcpc.usyd.edu.au/discovery/gl
   
   
6. Pickup bond
   A bond with a relatively high coupon that is close to the date at which it is callable, meaning that a fall in interest rates will most likely cause early redemption of the bond at a premium.
   Found on http://www.duke.edu/~charvey/Classes/wpg
   
   
7. pin type bond
   an electrical connection whose two ends are attached by friction to the ends of the rails at a joint
   Found on http://www.electropedia.org/iev/iev.nsf/