
 Pteron (Gr. πτερον – pteron — wing) is an architectural term used by Pliny the Elder for the peristyle of the tomb of Mausolus, which was raised on a lofty podium, and so differed from an ordinary peristyle raised only on a stylobate, as in Greek temples, or on a low podium, as in Roman temples.{sfn|Chisholm|1911|p=616} ...
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http://en.wikipedia.org/wiki/Pteron

• (n.) The region of the skull, in the temporal fossa back of the orbit, where the great wing of the sphenoid, the temporal, the parietal, and the frontal hones approach each other.
Found on 
http://thinkexist.com/dictionary/meaning/pteron/
 Pte'ron  noun
Pte'ron  noun [ New Latin , from Greek ... a wing.] 
 (Anat.) The region of the skull, in the temporal fossa back of the orbit, where the great wing of the sphenoid, the temporal, the parietal, and the frontal hones approach each other. 
Found on 
http://www.encyclo.co.uk/webster/P/188

(in a classical temple) a colonnade parallel to, but apart from, the cella. · the space between this and the cella.
Found on 
https://www.infoplease.com/dictionary/pteron
  No exact match found.