un(i)
one
bi(n)
two
du
two; twice
tri
three
terti
third
quadr(u)
four
quart
fourth
quinque
five
quint
fifth
sex(t)
six; sixth
sept, septem
seven
septim
seventh
oct
eight
octav
eighth
novem
nine
non
ninth
decem
ten
deci, decim
tenth
cent
hundred
mil(l)
thousand
unity
the state of being united or joined as a whole
dual
having two different parts, uses, etc.; having two of something
quarter
one of four equal parts
sextuplets
six offspring born at once
octant
a general term for something with 8 parts
December
the twelfth month of the year
millimeter
one thousandth of a meter
bicycle
a vehicle with two wheels
trinity
a group of three people or things
quintet
group of five
September
the ninth month of the year, formerly the seventh
nonagon
a polygon with nine sides
century
a period of 100 years
cent
1/100 of a dollar
mile
"1000 paces"
nonagenarian
person in his nineties
octoroon
person of one-eighth black ancestry
unicorn
mythical animal with one horn
decimal
based on the number ten
quintuplets
five offspring born at once
bicameral
based on two legislative bodies
quadrille
square dance
triumvirate
government by three persons
sextet
musical group of six
septennial
occurring every seven years
centipede
an insect with 100 legs
unanimous
of one mind; in complete agreement
biceps
muscles with two points of origin
trivial
unimportant, of little worth
duplicate
an identical copy or double of something (n.)
to make an identical copy or double of something (v.)
bicentennial
two-hundredth anniversary
triple
three times as many; made up of three parts
universal
present everywhere
dualism
the division of something into two opposed or contrasted aspects
octave
item with 8 parts, specific to music
decade
a period of ten years