Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • abbreviation senior
  • abbreviation señor
  • abbreviation sister (title)

from The Century Dictionary.

  • noun A contraction of senior: as, John Smith, Sr.
  • noun In chem., the symbol for strontium.
  • noun An abbreviation of the Latin Sacrum Romanum Imperium, Holy Roman Empire.
  • noun An abbreviation of the Latin Societatis Regiæ Socius, Fellow of the Royal Society.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the unit of solid angle adopted under the Systeme International d'Unites
  • noun a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
  • adjective used of the older of two persons of the same name especially used to distinguish a father from his son

Etymologies

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