Definition of polytypic in English:

polytypic

Pronunciation /ˌpäliˈtipik/

adjective

Crystallography

See polytype

‘This procedure helped in making an unambiguous distinction of the dielectric behaviour of the polytypic crystal from that of the corresponding 4H structure.’
  • ‘The most basic branched polytypic crystal that can therefore be produced using these materials is a tetrapod.’