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n. (used with a sing. or pl. verb)
Aerobics in which the participants step up onto and down from a low platform.
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.
(used with a sing. or pl. v.) aerobic exercises performed by stepping up onto and down from a stepping block.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
n sing → Steppaerobic nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
step aerobicsnpl → step msg
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995