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definitions

phosphor-

  1. variant of phosphoro- before a vowel: phosphorate.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
phosphor- in Medicine

phosphor-

pref.
  1. Variant ofphosphoro-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.