Prefix Dictionary – I-J

Meanings of medical prefixes

EUGENE M. MCCARTHY, PHD

Words Prefixes Suffixes Roots

a | b | c | d | e | f-g | h | i-j
k-l | m | n | o | p-q | r-s | t | u-z

iatr- or iatro- [Greek iatros physician] Pertaining to medicine or physicians (iatric, iatrology).

ichn- or ichno- [Greek ichnos track, trace, footprint] Denotes a footprint, trace, or track of an organism (ichnite, ichnology).

ichthy- or ichthyo- [Greek ichthys fish] Fish or fishlike (ichthyic, ichthyology).

icos- or icosa- or icoso- [Greek eikosi twenty] Twenty (icosahedron).

icter- or ictero- [Greek icteros jaundice] Jaundice, jaundicelike, yellow (icterohematuria, icteritious).

idio- [Greek idios individual] Specific to a particular individual, organ or tissue (idioretinal).

ile- or ileo- [Latin ileum, from Greek eilein to twist] Ileum (ileocecal valve).

im- or in- [Latin im-, in-] (1) in, into, inward (incise); (2) not (impotent, incontinence); (3) to cause to become (impregnate).

immun- or immuno- [Latin immunis exempt, immune] immune, safe; immunity, confering immunity (immunotherapy).

infra- [Latin infra below, on the under side, lower than, further along; to the south] Below, lower than (infraorbital, infraclass).

inter- [Latin inter between, among, during] Between, among, during (interleukin).

intra- or intro- [Latin intra, intro- within, inside, during, under] Among, within, inside, during (intramuscular, introgression).

iod- or iodo- Denotes iodine (iodophilia).

irid- or irido- [Greek iris, irid- iris] Pertaining to the iris (irideremia).

ischio- [Greek ischion hip] Pertaining to the ischium (ischiopubiotomy).

ischo- [Greek ischein to restrain] Denotes suppression, restraint or retention (ischochymia).

iso- [Greek isos equal] Equal (isopathy).

isthm- or isthmo- [Greek isthmos narrow passage] Isthmus.

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japon- Refers to Japan (Andrias japonicus).

jav- or java- Refers to Java (Javanthropus).

jejun- or jejuno- [Latin jejunum fasting, hungry] Pertaining to the jejunum (jejunectomy).

juba- [Latin juba mane, crest (of a helmet)] (1) crested (Neochen jubata, Ptarmus jubatus) (2) maned (Acinonyx jubatus).

juxta- [Latin juxta near, next to] Near, alongside (juxtapyloric).

Words Prefixes Suffixes Roots

a | b | c | d | e | f-g | h | i-j
k-l | m | n | o | p-q | r-s | t | u-z