smart card n. A plastic card containing a microchip and enabling the holder to purchase goods and services, enter restricted areas, access medical, financial, or other records, or perform other operations requiring data stored on the microchip. American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.smart card n (Computer Science) a plastic card with integrated circuits used for storing and processing computer data. Also called: laser card or intelligent card Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014smart? card` n. a small plastic card usu. embedded with an electronic memory chip, used for financial transactions, identification, as a key, etc. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.