Medical Terminology and Cancer

© Copyright 1996-2000

4: The Components of Medical Terminology


Contents


Components of Medical Words

Most medical terms are compound words made up of root words which are combined with prefixes (at the start of a word) and suffixes (at the end of a word). Thus medical terms that may at first seem very complex can be broken down into their component parts to give you a basic idea of their meaning. For example the word neuroblastoma

neuro- means nerve
blast- relates to immature cells
-oma means tumour.

Therefore by breaking down a complex word we can see that neuroblastoma literally means a tumour made up of immature nerve cells.

To take another type of tumour: osteogenic sarcoma

osteo- means bone
-genic means creating / causing

Thus we can see that this is a bone forming tumour.

All medical terms have a root word. They may also have a prefix, a suffix, or both a prefix and a suffix.


Root Words

Some examples of root words:-

componentmeaningexample
BLAST- germ, immature cell blastoma = a cancer made of immature cells
CARCIN- cancer carcinogenic = cancer causing
CARDIO- heart cardiotoxicity = toxicity to the heart
CYTO- cell cytotoxic = toxic to the cell
DERMA- skin dermatitis = inflammation of the skin
HISTIO- tissue histology = study of tissue
HEPATI- liver hepatoblastoma = liver cancer
MALIGN- bad / harmful malignant = growing, spreading
NEPHRO- kidney nephrotoxic = harmful to the kidneys
NEURO- nerves neurob1ast = an immature nerve cell
ONCO- mass / tumour oncology = the study of cancer
OSTEO- bone / bony tissue osteosarcoma = bone cancer
PAED- child paediatric oncology = study of childhood cancer
SARCO- tissue sarcoma = tumour of bone, muscle, or connective tissue
TOXO- poison toxicology = study of poisons


Suffixes

Some examples of suffixes:-

componentmeaningexample
-AEMIA condition of blood leukaemia = cancer of blood cells
-ECTOMY excision / removal nephrectomy = excision of a kidney
-ITIS inflammation hepatitis = inflammation of the liver
-OLOGY study / science of cytology = the study of cells
-OMA tumour retinoblastoma = tumour of the eye
-PATHY disease neuropathy = disease of the nervous system
-OSIS disease /condition necrosis = dying cells


Prefixes

Some examples of prefixes:-

componentmeaningexample
AN-, A- without / lack of anaemia = lack of red blood cells
AB- away from abnormal = away from the normal
AD- near / toward adrenal gland = gland near to the kidney
BI- two / both bilateral Wilm's = tumour in both kidneys
DYS- difficult / painful dysfunction = not working properly
ECTO- outside ectopic pregnancy = outside the uterine cavity
ENDO- inside endoscope = an instrument to look inside the body cavities or organs
EPI- upon epidermis = the outer layer of skin
HYPER- excessive / above hyperglycaemia = excessive blood sugar levels
HYPO- beneath / below hypodermic = injection below the skin
INTER- between intercostal = between the ribs
INTRA- within / Inside intravenous = into a vein
PARA- beside, about, near parathyroid = beside the thyroid gland
PERI- around pericardium = membrane around the heart
PRE- before prenatal = before birth
POST- after post surgical stage = stage after surgery
SUB- under / below submucosa = tissue below mucus membrane
SYN- together with syndrome = group of symptoms occurring together


This guide by Simon Cotterill
Department of Child Health
University of Newcastle upon Tyne
UK

First created 04/03/96
Last modified: 31/08/2000