| A | B |
|---|
| mono | one |
| uni | one |
| monogram | design of two or more letters |
| monopoly | exclusive control by a group |
| monorail | railway that runs on a single track |
| monotony | sameness; lack of variety |
| unicorn | mythical horselike animal with one horn |
| unicycle | vehicel with one wheel |
| unilateral | of on or by one side |
| unison | speaking or singing together |
| bi | two |
| di | two |
| biceps | muscle with two points of origin |
| bilingual | able to use two languages well |
| biped | two-footed animal |
| ped | foot |
| bisect | divide into two parts |
| dichromatic | having two colors |
| dilemma | situation requiring a choice between two alternatives |
| diploma | certificate marking end of a course of study |
| dipterous | having two wings |
| tri | three |
| triceratops | dinosaur with three horns |
| tricorn | hat with three sides of the brim turned up |
| triennial | happening once every three years |
| annus | year |
| triplicate | made in three copies |
| quadr, tetr | four |
| quadrangle | a square open area surrounded by buildings |
| quadruped | an animal with four feet |
| ped | foot |
| tetrachloride | chemical compound containing four chlorine atoms |
| tetrahedron | a triangular pyramid |
| penta/quint | five |
| pentacle | a five-pointed star |
| pentagon | figure having five sides and five angles |
| pentameter | line of verse with five measures |
| pentathlon | a contest in which athletes try for the highest score |
| quintessence | the purest or most typical example |
| quintet | group of five musicians |
| quintuplet | any of five offspring born at one birth |
| deca | ten |
| decade | a period of ten years |
| decagon | a figure with ten sides and ten angles |
| decathlon | athletic contest involving ten events |
| deci | tenth |
| decibel | unit of sound intensity |
| deciliter | metric measure of volume equal to one-tenth of a liter |
| decimal | fraction with unwritten denominator of ten |
| decimate | to kill or destroy a large part of |
| demi/hemi/semi | half |
| demigod | a being who is part human, part god |
| demitasse | a small cup of coffee |
| hemisphere | half a spherical object |
| semicolon | a punctuation mark indicating a larger pause than used with a period |
| semiannual | occuring half-yearly, or twice a year |
| semiconscious | half-aware; half-awake |
| cent | hundred |
| centennial | occuring once every hundred years |
| centipede | a long, many-segmented insect with a pair of legs on each segment |
| centuple | to multiply by one hundred |
| centurion | an officer commanding a unit of one hundred men in Roman army |
| centi | hundredth |
| centigrade | divided in to one hundred degrees |
| centimeter | a metric unit of length equal to one hundredth of a meter |
| kilo/mill | thousand |
| kilobyte | unit of capacity equal to 1,024 bytes |
| kilohertz | a unit of frequency equal to 1,000 cycles per second |
| kilometer | a metric unit of length equal to 1,000 meters |
| kilowatt | a unit of electrical power equal to 1,000 watts |
| millenium | a period of 1000 years |
| millipede | a long, many-segmented insect with two pairs of legs on each segment |
| milli | thousandth |
| milligram | equal to one thousandth of a gram |
| millimicron | equal to one thousandth of a micron |
