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, `pi 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 `�€` in their name refers to p orbitals, since the orbital symmetry of the pi bond is the same as that of the p orbital when seen down the bond axis. P orbitals usually engage in this sor...
   Found on http://en.wikipedia.org/wiki/Pi_bond
   
   
4. 
   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
   
   
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/