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definitions

phosphoro-

  1. a combining form representing phosphorus in compound words: phosphoroscope.
Also especially before a vowel, phosphor-.
Compare phospho-.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
phosphoro- in Medicine

phosphoro-

pref.
  1. Phosphorus:phosphorous acid.
  2. Phosphorescent:phosphorogen.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.