zsabbr. zeptosecondAmerican 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.
zs
z’s
Z1. The symbol for atomic number.2. The symbol for impedance.z or Z (z?)n. pl. z’s or Z’s also zs or Zs 1. The 26th letter of the modern English alphabet.2. Any of the speech sounds represented by the letter z.3. The 26th in a series.4. Something shaped like the letter Z.5. z’s Slang Sleep.[Sense 5, from zzz.]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.z (z?d; US zi?) or Zn, pl z’s, Z’s or Zs1. (Linguistics) the 26th and last letter and the 20th consonant of the modern English alphabet2. (Phonetics & Phonology) a speech sound represented by this letter, in English usually a voiced alveolar fricative, as in zip3. a. something shaped like a Zb. (in combination): a Z-bend in a road. z symbol for 1. (Mathematics) the z-axis or a coordinate measured along the z-axis in a Cartesian or cylindrical coordinate system 2. (Mathematics) an algebraic variable Z symbol for 1. (Mathematics) any unknown, variable, or unspecified factor, number, person, or thing 2. (Chemistry) chem atomic number 3. (General Physics) physics impedance 4. zone 5. (Currencies) currency zaïre abbreviation for (Automotive Engineering) Zambia (international car registration) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Z, z (zi; esp. Brit. z?d; Archaic ??z ?rd) n., pl. Zs Z’s, zs z’s. 1. the 26th letter of the English alphabet, a consonant. 2. any spoken sound represented by this letter. 3. something shaped like a Z. 4. a written or printed representation of the letter Z or z. Z Symbol. 1. the 26th in order or in a series. 2. atomic number. z zone. z Math. Symbol. an unknown quantity or a variable. z. zero. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.zThe letter ‘z’ is called zed (/zed/) in British English and zee (/zi?/) in American English.