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Prefixes and Terminology

ab- away from
ad- toward, near
ana- up, apart
ante- before, forward
anti- against
bi- two, both
brady slow
con- with, together
dia- through, complete
dys- bad, painful, difficult, abnormal
ec- out, outside
endo- within, in, inner
epi- above, upon
ex- out
extra- outside of
hemi- half
hyper- excessive, too much, above
hypo- deficient, too little, below
in- in, into
inter- between
intra- within
mal- bad
meta- change, beyond
neo- new
para- beside, near along the side of
peri- surrounding
poly- many, much
post- after, behind
pre- before
pro- before, forward
pros- before, forward
quadri- four
re- back, behind
retro- back, behind
sub- under, less than
syn- with, together
tachy- fast
trans- cross, through
tri- three
ultra- beyond
uni- one
a-, an- no, not, without