Share this entry
polytype Syllabification: pol·y·type
Pronunciation: /ˈpälēˌtīp/

Definition of polytype in English:


Any of a number of forms of a crystalline substance that differ in only one of the dimensions of the unit cell.
Example sentences
  • There are four polytypes known.
  • Microcrystals of the following polytypes were identified: 4H, 6H, 15R, and 18R.
  • Several polytypes of wurtzite were reported at the Negley and Alikanna sites.


Pronunciation: /ˌpäliˈtipik/
Example sentences
  • 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.
Pronunciation: /ˌpäliˈtīˌpizəm/
Example sentences
  • Neither the concept of polytypism nor the X-ray diffraction technique was known in Domeyko's time.
  • Polytypism is a type of polymorphism wherein different polymorphs exist in different domains of the same crystal.
  • The polytypism in graphite manifests itself in two ways.
Definition of polytype in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources