zoy·sia (zoi?sh?, -zh?, -s?-?, -z?-?)n. Any of several creeping grasses of the genus Zoysia, native to Southeast Asia and Australasia and widely cultivated for lawns.[New Latin Zoysia, genus name, after Karl von Zois zu Laubach (1756-1800?), Austrian botanist.]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.zoysia (?z??z??) n (Plants) any creeping perennial grass of the genus Zoysia, of warm dry regions, having short stiffly pointed leaves: often used for lawns[C19: from New Latin, named after Karl von Zois (died 1800), German botanist]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zoy?si?a (?z?? si ?, -??, -??) n., pl. -si?as. any low-growing grass of the genus Zoysia, esp. Z. matrella, widely used for lawns. [1920?25; after Karl von Zois (d. 1800), German botanist] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.