
1) English boy name 
Found on 
https://www.crosswordclues.com/clue/penton

 Penton was a brand of off-road motorcycle introduced in 1968 by John Penton, a noted enduro rider on the dirt bike competition circuit, who was inducted into the AMA Motorcycle Hall of Fame in 1998. Penton approached the KTM company, which at the time made bicycles and mopeds, to build a light-weight off-road motorcycle. The first Penton motorcycl...
Found on 
http://en.wikipedia.org/wiki/Penton
 [professional information services]
[professional information services]  Penton, founded in 1892 by John Penton, is a publisher of trade magazines, organizer of tradeshows, and provider of online marketing services. Today, Penton is the largest independent company of this kind in the United States, Penton runs 65 tradeshows and conferences, 145 digital properties, 20 paid data...
Found on 
http://en.wikipedia.org/wiki/Penton_(professional_information_services)

(from the article `polyether`) ...they are used mostly as metal primers. Polyphenylene oxide resins, such as Noryl, possess great resistance to water and to high temperatures ...
Found on 
http://www.britannica.com/eb/a-z/p/40

The pentagonal capsomere (p. Base) along with the protruding fibre at each of the 12 vertices of the adenovirus capsid; antigenically, the penton base differs from the fibre, and both differ from the other (hexagonal) capsomeres. ... (05 Mar 2000) ... 
Found on 
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: pen′tŏn Definitions: 1. The pentagonal capsomere (p. base) along with the protruding fiber at each of the 12 vertices of the adenovirus capsid; antigenically, the penton base differs from the fiber, and both differ from the other (hexagonal) capsomeres.
Found on 
http://www.medilexicon.com/medicaldictionary.php?t=66719
  No exact match found.