40 terms

SEPT, SEPTEM

(base) seven

SEPTIM

(base) seventh

OCT

(base) eight

OCTAV

(base) eighth

NOVEM

(base) nine

NON

(base) ninth

DECEM

(base) ten

DECI, DECIM

(base) tenth

CENT

(base) hundred

MIL(L)

(base) thousand

September

The 9th month

Septennial

occurring every 7 years

Septimal

of or relating to the number seven

Octopus

a mollusk with eight sucker-bearing legs

October

The 8th month

Octave

a series of eight notes occupying the interval between one musical pitch and another with half or double its frequency

November

The 11th month

Nonagon

A polygon with nine sides

Nonagenarian

person in his/her nineties

December

the 12th month

Decimal

based on the number ten

Decimate

To destroy or kill a large part of; kill one in every ten of (a group of soldiers or others) as a punishment for the whole group

Centimeter

1/100th of a meter

Centipede

a predatory invertebrate with a flattened elongated body composed of many segments; said to have 100 legs

Millipede

an invertebrate with an elongated body composed of many segments, most of which bear two pairs of legs; said to have 1000 legs.

Antiseptic

free from germs; thoroughly clean; a substance that inhibits the growth of germs

Octagon

an eight-sided figure

Octoroon

(historical) a person who is one-eighth black by descent

Decade

a period of ten years

Decimeter

a metric unit of length, equal to one tenth of a meter

Percent

number of parts in every 100

Century

A period of 100 years

Cent

one penny; 1/100th of a dollar

Centennial

A hundredth anniversary

Mile

a unit of linear measure equal to 5,280 feet (approximately 1.609 kilometers); originally equivalent to 1000 paces

Millimeter

a unit of measure equal to 1/1000th of a meter

Million

the number equivalent to 1000x1000

Milligram

a unit of measure equal to 1/1000th of a gram

Septangular

having seven angles

Octavo

a size of book page that results from the folding of each printed sheet into eight leaves (sixteen pages)