Definition of "GR"

GR

proper noun
1. (British) Initialism of George Rex. (on coins, letterboxes, etc.) The royal cypher for George V and his son George VI, kings of Great Britain
noun
countable and uncountable, plural GRs
1. (biochemistry) Initialism of glucocorticoid receptor.
  Quotations
  The expression of GR is ubiquitous and it occurs in two forms, GR-α and GR-β.
  2001 Nussey, S. S. and Whitehead, S. A. The adrenal gland. In: Bosher, Andrea. Endocrinology: An Integrated Approach. Oxford, UK: BIOS Scientific Publishers; 2001 . Available from: http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=endocrin&part=A442#A468 .
2. (physics) Initialism of general relativity.
3. (sports) Initialism of games record.