S wave - definition of S wave by The Free Dictionary
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The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature
The stars of the north arise over the rolling of Erin's waves
: they shew their heads of fire, through the flying mist of heaven.