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Medical terminology is composed of a prefix, root word, and suffix:
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.
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Med terms ‘P’: suffixes/prefixes in medical terminology

Medical terminology is used to precisely describe the human body components, processes, illnesses, medical procedures, and pharmacology. Medical terms are used in the field of medicine, and clinical settings. This section deals with all med terms beginning with the letter P, and features roots, suffixes and prefixes in medical terminology.

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This section was developed for 'speed learning' of medical terminology. Start by reviewing the meanings for a block of medical terms, and then go back and choose a previous term randomly and try to recall the meaning of that particular medical term before hovering over the term to determine the answer. These frequent mini-tests will accelerate the learning process and in a relatively short period of time, you will be able to quickly recall the meaning of all of the listed medical terms. This method of learning is superior to flash cards because of the frequent exposure and testing of your recall.

pachy-   heavy; thick
-pagus   conjoined twins
palat/o   palate (roof of mouth)
pale/o   old
pali-   recurrence, repetition
palliat/o   to soothe, relieve
palpebr/o   eyelid
palp/o, palpat/o   to touch gently
palpit/o   flutter, throbbing
pan-   all

pancreat/o   pancreas
pant/o   all, whole
papill/o   nipple-like; optic disc
papul/o   papule, pimple
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
parasit/o   parasite
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
pedicul/o   louse
ped/o   child; foot
pelv/i   pelvis; hip region
pelv/o   pelvis; hip region
pend/o   to hang
-penia   deficiency
-pepsia   digestion
per-   through
percuss/o   to tap
peri-   surrounding
perine/o   perineum
peritone/o   peritoneum
per/o   deformed, maimed
perone/o   fibula
perspir/o   breathe through
petr/o   stone, petrous region of temporal bone
-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
phaner/o   visible, apparent
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)
phosphat/o   phosphate
phot/o   light
phren/o   diaphragm; mind
-phthisis   wasting away
-phylaxis   protection
phyl/o   race, species, type
physi/o   nature; function
physic/o   physical, natural
-physis   to grow
phys/o   air, gas
phyt/o   plant
-phyte   plant
picr/o   bitter
pies/i, -piesis   pressure
pil/o   hair
pimel/o   fat, fatty
pineal/o   pineal gland
pin/o   to drink
pituitar/o   pituitary gland
-plakia   plaque
plan/o   flat, level, wandering
plant/o   sole of the foot
plas/o   development; formation
-plasia   development; formation
-plasm   formation; structure
-plastic   pertaining to formation
-plasty   surgical repair
platy-   broad, flat
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)
por/o, -pore   opening, passageway
-porosis   condition of pores (spaces)
-posia   drinking
posit/o   arrangement, place
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
pros/o   forward, anterior
prosop/o   face
prostat/o   prostate gland
prot/o   first
prote/o   protein

proxim/o   near
prurit/o   itching
psamm/o   sand, sand-like material
pseudo-   false
psor/o   itching
psych/o   mind
psychr/o   cold
-pterygium   abnormality of the conjunctiva
-ptosis   droop; sag; prolapse; protrude
ptyal/o   saliva
-ptysis   spitting
pub/o   pubis (anterior part of hip bone)
pulmon/o   lung
puls/o, pulsat/o   to beat, beating
-puncture   to pierce a surface
pupill/o   pupil (dark center of eye)
purpur/i   purple
purul/o   pus
py/o   pus
pycn/o   thick, dense
pyel/o   renal pelvis
pyl/e   portal vein
pylor/o   pylorus; pyloric sphincter
pyr/o   fever; fire
pyret/o   fever
pyrex/o   fever

Additional Resources

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Med terms ‘P’: suffixes/prefixes in medical terminology