blister pack

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A transparent, molded piece of plastic, often sealed to a sheet of cardboard, used to package and display an item of merchandise.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One of several types of pre-formed plastic packaging, used for consumer goods and pharmaceuticals, consisting of a cavity and lidding.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun packaging in which a product is sealed between a cardboard backing and clear plastic cover