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What does iso- mean in medical terms?
iso-
Meaning: equal, same
Type: Prefix
A prefix goes at the very start of a word, before the root. On this page: what iso- means, and real medical words that use it, each broken down into its parts.
Example words using iso-
isotonic
iso- (equal) + tonic (relating to tension or concentration) = having equal concentration or tension
iso- (equal) + tonic (relating to tension or concentration) = having equal concentration or tension
isometric
iso- (same) + metric (relating to measure or length) = maintaining the same length
iso- (same) + metric (relating to measure or length) = maintaining the same length
isotope
iso- (same) + tope (place) = a form of an element occupying the same place in the periodic table
iso- (same) + tope (place) = a form of an element occupying the same place in the periodic table
Shortened forms
Charts and notes shorten long terms — see the Medical Abbreviations guide for the short forms you will meet in real records.
Please note: This section teaches the language of medicine — what word parts mean and how terms are built. It is an educational reference, not medical advice. For the meaning of a word in your own medical record, ask the clinician who wrote it.