SCSI (sk?z??)n. A small computer system interface used for connecting peripheral devices, such as external disk drives and scanners, as used on personal computers.[s(mall) c(omputer) s(ystem) i(nterface).]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.SCSI (?sk?z?) n (Computer Science) Small Computer Systems Interface: a system for connecting a computer to peripheral devicesCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014SCSI (?sk?z i) n. a standard for computer interface ports featuring faster data transmission and greater flexibility than normal ports. [1985?90; s(mall) c(omputer) s(ystem) i(nterface)] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.