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Medical Terminology

Prefixes, roots, suffixes

Prefix: A prefix is placed at the beginning of a word to modify or change its meaning. Pre means "before." Prefixes may also indicate a location, number, or time.    Root: central part of a word.   Suffix:  The ending part of a word that modifies the meaning of the word. Example: homeless. Root = 'home' and the suffix is 'less'. It can also refer to a condition, disease, disorder, or procedure.

P

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Term
Meaning
pachy- heavy; thick
palat/o palate (roof of mouth)
palpebr/o eyelid
pan- all
pancreat/o pancreas
papill/o nipple-like; optic disc
par- other than; abnormal
para- near; beside; abnormal; apart from; along the side of
-para to bear, bring forth (live births)
-parous to bear, bring forth
parathyroid/o parathyroid glands
-paresis weakness
-pareunia sexual intercourse
-partum birth; labor
patell/a patella
patell/o patela
path/o disease
-pathy disease; emotion
pector/o chest
ped/o child; foot
pelv/i pelvis; hip region
pelv/o pelvis; hip region
pend/o to hang
-penia deficiency
-pepsia digestion
per- through
peri- surrounding
perine/o perineum
peritone/o peritoneum
perone/o fibula
-pexy fixation; to put in place
phac/o lens of eye
phag/o eat; swallow
-phage eat; swallow
-phagia eating; swallowing
phak/o lens of eye
phalang/o phalanges (of fingers and toes)
phall/o penis
pharmac/o drug
pharmaceut/o drug
pharyng/o throat (pharynx)
phas/o speech
-phasia speech
phe/o

dusky; dark

-pheresis removal
phil/o like; love; attraction to
-phil attraction for
-philia attraction for
phim/o muzzle
phleb/o vein
phob/o fear
-phobia fear
phon/o voice; sound
-phonia voice; sound
-phor/o to bear
-phoresis carrying; transmission
-phoria to bear, carry; feeling (mental state)
phot/o light
phren/o diaphragm; mind
-phthisis wasting away
-phylaxis protection
physi/o nature; function
-physis to grow
phyt/o plant
-phyte plant
pil/o hair
pineal/o pineal gland
pituitar/o pituitary gland
-plakia plaque
plant/o sole of the foot
plas/o development; formation
-plasia development; formation
-plasm formation; structure
-plastic pertaining to formation
-plasty surgical repair
ple/o more; many
-plegia paralysis; palsy
-plegic paralysis; palsy
pleur/o pleura
plex/o plexus; network (of nerves)
-pnea breathing
pneum/o lung; air; gas
pneumon/o lung; air; gas
pod/o foot
-poiesis formation
-poietin substance that forms
poikil/o varied; irregular
pol/o extreme
polio- gray matter (of brain or spinal cord)
poly- many; much
polyp/o polyp; small growth
pont/o pons ( a part of the brain)
-porosis condition of pores (spaces)
post- after; behind
poster/o back (of body); behind
-prandial meal
-praxia action
pre- before; in front of
presby/o old age
primi- first
pro- before; forward
proct/o anus and rectum
pros- before; forward
prostat/o prostate gland
prot/o first
prote/o protein
proxim/o near
prurit/o itching
pseudo- false
psych/o mind
-ptosis droop; sag; prolapse; protrude
-ptysis spitting
pub/o pubis (anterior part of hip bone)
pulmon/o lung
pupill/o pupil (dark center of eye)
purul/o pus
py/o pus
pyel/o renal pelvis
pylor/o pylorus; pyloric sphincter
pyr/o fever; fire
pyret/o fever
pyrex/o fever