R:Meter

M:to measure

E:diameter

R:vent

M:come

E:venture

R;brev

M:short

E:abbreviate

R:leg

M:of the law

E:legality

R;rect

M:straight

E:erect

R:agri

M:farming
E:agriculture

R:alter

M:other

E:Alternate

M:grav

M:heavy,weighty
E:gravity

P:circum-

M:around
E:circumvent

P:dia-

M:through,across
E:diameter

P:fore-

M:before,Infront of
E:forefont

P:hemi-

M:half

E:hemisphere

P:in-

M:not,without

E:innapropiate

P:peri-

M:around,about
E:perimeter

S:-ion

M:act of

E:perfection

S: -ant

M:one who

E:perfection

S: -ize

M:become

E:populate

S; -ate

M:become

E:populate

S: -ing

M:the result of
E:teaching