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Prefixes

Med Term Vocab - prefixes

TermDefinition
a- or an- A- or an- means no, or without. For example, asepsis means without pathogens, or the state of being free from pathogens.
ab- Ab- means away from. For example, abduction is movement of a limb away from the midline of the body.
ad- Ad- means toward. For example, adduction is movement of a limb toward the midline of the body.
aut(o)- Aut- means self. Aut(o) is its combining form. For example, an autograft is a surgery using one’s own skin to make the repair.
brady- Brady- means slow. For example, bradycardia refers to a slow heartbeat
chem(o)- Chem- means chemistry or drug. Chem(o) is its combining form. For example, chemotherapy is a drug treatment used to treat cancer.
dia- Dia- means complete or through. For example, diagnosis refers to a complete state of knowledge for the purposes of identifying a disease.
dis- Dis- means to separate or take apart. For example, dissection refers to cutting open an organism to observe its internal structures. Dis- can also be used to mean: lack, as in distrust or disorientation reversal, as in disconnect
dys- Dys- means abnormal or painful. For example, dysentery is the name of a disease that causes inflammation of the intestine, and is quite painful.
endo- Endo- means inside or within. For example, endoscopy is a method of visualizing internal organs with a camera.
epi-/exo- Epi- and exo- both mean outside or outside of. For example, epicardium is the outer heart tissue, and exoskeleton is a skeletal structure found on the outside of an organism
eu- Eu- means good or normal. For example, euglycemia refers to a normal level of blood sugar.
hyper- Hyper- means above or above normal. For example, hypertension refers to high blood pressure.
hypo- Hypo- means under or below normal. For example, hypoglycemia refers to low blood sugar.
inter- Inter- means between or among. For example, intercellular means between or among cells
lyso- Lyso- means dissolve or dissolution. For example, lysosomes are parts of cells that dissolve or break down waste.
macro- Macro- means large. For example, macrophages are large cells.
mal- Mal- means bad or ill. For example, malignant refers to a growth that is cancerous, made up of abnormal cells multiplying uncontrollably.
micro- Micro- means small. For example, a microscope is a tool used by scientists to view small body parts, such as tissues and cells.
mono- Mono- means single or one. For example, a monolayer refers to a structure with only one layer.
neo- Neo- means new. For example, a neonate is a newborn.
para- Para- means beside, beyond, around, or abnormal. For example, parathyroid glands are small glands next to, or beside, the thyroid
poly- Poly- means many, or more than usual. For example, polydipsia means excessive thirst, where dipsa is a Greek root word meaning thirst.
post- Post- means after or behind. For example, postmortem means after death
pre- Pre- means before. For example, preoperative means before an operation.
pro- Pro- means before. For example, prognosis means a prediction of the course of a disease, based on medical knowledge, before it happens.
re- Re- means again or backward. For example, relapse refers to a recurrence of a past condition.
schiz(o)- Schiz means split. Schiz(o) is the combining form. For example, schizophrenia refers to a mental disorder in which mental functions become split and confused.
sub- Sub- means below or under. For example, subcutaneous refers to something below the skin.
supra- Supra- means above or excessive. For example, suprapatellar refers to the area above the patella or kneecap.
tachy- Tachy- means fast. For example, tachycardia is a fast heartbeat.
trans- Trans- means moving through or across. For example, transfusion is a transfer of blood from one person to another.
Created by: Vaishnavi.
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