Common medical prefixes and suffixes

  • A-, an-: without, lack of
  • -ation: a process
  • Brady-: slow
  • Dys-: painful or abnormal
  • -ectomy: surgical removal
  • Hemi-: half
  • Hetero-: different
  • Homo-: same
  • -ismus: presence of a spasm or contraction
  • -itis: inflammation
  • -lysis: decomposition
  • Macro-: large
  • Melan/o-: dark in colour
  • Micro-: small
  • -ology: study of a certain field
  • -osis: indicates the presence of an abnormality
  • -otomy: to cut
  • -pathy: disease or disease process
  • -plasty: surgical repair
  • Poly-: many
  • Pseudo-: false or deceptive
  • Retro-: behind or backward
  • Cardi/o-: related to heart
  • Derm/a/o, dermat/o-: related to skin
  • Encephal/o-: related to brain
  • Gastr/o: related to gastrointestinal tract
  • Haemat/o-: related to blood
  • Hepato-: related to lungs
  • My/o-: related to muscle
  • Nephr-: related to kidneys
  • Oste/o-: related to bone
  • Pulmon/o-: related to lungs
  • Resp-: related to lungs
  • Rhin/o-: related to nose
  • -sclerosis: hard or hardenings
  • -stasis: slowing or stopping the flow of a bodily fluid
  • Tachy-: fast
  • Therm/o-: indicates heat
  • Thyr/o-: related to thyroid gland
  • Trache/o-: related to trachea.

Some more common medical prefixes and suffixes

  • Andr/o-: male (e.g. androgen – male sex hormone)
  • Anti-: against (e.g. anticholinergic drugs – drugs that counteract the effects of acetylcholine)
  • Auto-: self (e.g. autocrine – a substance acting on the same cell that produces it)
  • Bio-: life (e.g. biology – the study of living organisms)
  • Chem/o-: chemistry (e.g. chemotherapy –  treatment using chemical agents)
  • Cerebro-: related to brain
  • Contra-: against (e.g. contraception – prevention of pregnancy)
  • Cyt/o-: cell (e.g. cytokine – a signalling molecule produced by cells)
  • Dis-: separation or taking apart (e.g. dissection – cutting apart of tissue)
  • Eu-: good or well (e.g. euvolaemic)
  • Fibr/o-: fibre (e.g. fibrosis – excessive fibrous tissue formation)
  • Gluco- or glyco-: glucose or sugar (e.g. glycogen – stored form of glucose)
  • Gyn/o- or gynaec-: Female (e.g. gynaecology – study of female reproductive system)
  • Hydr/o-: water (e.g. hydrocephalus – accumulation of fluid in the brain)
  • Hyper-: more of (e.g. hypertension)
  • Hypo-: less of (e.g. hypovolaemia)
  • Idio-: self or one’s own (e.g. idiopathic – of unknown cause)
  • Lyso- or lys-: Break down, destruction, or dissolving (e.g. lysosome – cellular organelle that breaks down waste).
  • Mal-: bad or abnormal (e.g. malignant)
  • Myc/o-: fungus (e.g. mycetoma – fungal infection)
  • Necr/o-: death (e.g. necrosis – tissue death)
  • Neo-: new (e.g. neonate – newborn)
  • Oxy-: sharp, acute, or related to oxygen (e.g. oxytocin – hormone involved in labour and milk release)
  • Pan- or pant/o-: all or everywhere (e.g. pancytopenia – deficiency of all blood cell types)
  • Pharmaco-: drug or medicine (e.g. pharmacist – a professional who dispenses medications)
  • Psych:- related to mind
  • Re-: again or backward (e.g. rejuvenation – restoration of youthfulness)
  • Somat/o-: body or bodily (e.g. somatic cell – any cell except reproductive cells).