Prefixes

1. PREFIXES
Prefixes are syllables added / attached to the beginning of a word to give
another meaning.
Examples:
invisible- not visible
reorganize- organize again
SOME PREFIXES SHOWING QUANTITY
PREFIX MEANING EXAMPLES
uni, mono one unicellular, monomial
bi two bicycle
tri three triangle, trigonometry
quad four quadrangle, quadruplet
quin five quintet, quintuplet
hexa six hexagon
hepta seven heptagon
oct / octo eight octagon, octopus
nona nine nonagon
dec / deca ten
decade, decagon,
decimal
cen hundred
century, centennial,
centimeter
milli thousand millimeter, millenium

2. SOME PREFIXES SHOWING TIME
SOME PREFIXES SHOWING NEGATION
OTHER PREFIXES
PREFIX MEANING EXAMPLES
ante, pre, before
preface, foreword, pre-
test, antedate
fore
post after, later post-test, postwar
re again repaint
PREFIX MEANING EXAMPLES
im, il, ir,
un,
without, no,
not impatient, ilegal, irrational,
in, non,
dis undergraduate, incomplete,
non-profit, disorganize
counter opposite
counterclockwise,
counterpart
mis, mal wrong, bad misfortune, malfunction
PREFIX MEANING EXAMPLES
semi half semi-circle
anti against, antivirus, antidote
opposite
circum around circumference
micro very small microorganism, microbiology
phono sounds phonology

3. photo picture photograph, photography
auto self autobiography
bio life biology
hydra water hydraulic
intra within intrapersonal
inter
between,
within, intercede, interchange
reciprocal
super above, over supervisor
sub under, below subtitle
extra
beyond,
outside extraordinary
equi equal equilateral