Word

Definition

aam
 archaic unit of liquid measure ranging from 37 to 41 gallons of wine

abampere
 unit equivalent to 10 amperes

abvolt
 unit of electrical potential equal to one hundred millionth of a volt

acrebreadth
 old unit of length of 22 yards

ampere
 unit for measuring amount of electrical current

angstrom
 unit of one tenbillionth of a meter

arpent
 unit of land area slightly smaller than an acre

astronomical unit
 unit of distance equal to the distance from the earth to the sun

bar
 unit of pressure of one million dynes per square centimeter

barleycorn
 old unit of length equal to onethird inch

barn
 unit of area measurement of particles equal to 100 square femtometres

baud
 unit of data transmission speed of one signal event per second

bel
 unit of noise intensity equal to ten decibels

butt
 unit of volume equal to two hogsheads or 126 gallons

calorie
 unit of heat or heatproducing value

candela
 unit of luminous intensity

carat
 unit of weight of precious stones equal to 200 milligrams

centner
 old unit of weight equal to about 110 pounds

chain
 unit of length equal to 22 yards

chaldron
 old unit of dry volume equal to between 32 and 72 bushels

clove
 old weight of seven to ten pounds for wool or cheese

cord
 unit of wood equal to 128 cubic feet

coulomb
 unit of electrical charge of one ampere over period of one second

cubit
 unit of length equal to 18 inches

curie
 unit of radioactive decay and intensity

cusec
 unit of liquid flow equal to one cubic foot per second

dalton
 unit of atomic mass

darcy
 unit of permeability of rock to various substances

dash
 nonspecific very small unit of measurement used in cooking

decibel
 unit for measuring sound intensity

denier
 unit of yarn fineness

digit
 unit of length equal to 3/4 of an inch

dioptre
 unit of measurement of power of lens or eye

dol
 unit for measuring intensity of pain

dram
 unit of weight equal to 1/16 of an ounce

dyne
 unit of force to accelerate 1 gram to 1 cm per second per second

elephant
 large unit of paper measurement equal to 28 by 23 inches

ell
 old unit of length equal to 45 inches

em
 unit of measuring width of typeface where width of letters equals height

erg
 unit of work measuring force of one dyne applied over one centimeter

facecord
 unit of wood measurement equal to a stack four by eight feet in volume

farad
 unit measuring electrical capacitance

fathom
 unit of length equal to six feet used to measure depth of water

fermi
 unit of length equal to one quadrillionth of a metre

fifth
 unit of measure of liquor equal to one fifth of a gallon

firkin
 old unit of capacity equal to one quarter of a barrel

footlambert
 unit of luminance of a surface emitting one lumen per square foot

fresnel
 unit of optical frequency equal to one terahertz

furlong
 unit of distance equal to 220 yards

gal
 unit of acceleration of one centimeter per second per second

gamma
 unit of magnetic flux density equal to one nanotesla

gauss
 unit of magnetic flux density equal to 1/10000 tesla

gilbert
 unit of magnetomotive force

gill
 unit of liquid volume equal to onequarter pint

grain
 unit of weight equal to 1/7000 of a pound

gray
 unit of absorbed dose of ionizing radiation equal to 100 rads

hand
 unit for measuring height of horses equal to 4 inches

henry
 unit of electrical inductance

hertz
 unit of frequency equal to one cycle per second

hide
 old unit of land area equal to 120 acres

hobbet
 measure of two and a half bushels

hogshead
 unit of capacity equal to 63 gallons

horsepower
 unit of power equal to 550 footpounds of work per second

hundredweight
 unit of weight of 100 pounds (112 pounds in UK)

jansky
 unit of strength of radio wave emission

jiffy
 unit of time used in computing equal to 1/100 second; any small unit of time

joule
 unit of work done by force of one newton over distance of one meter

karat
 unit of fineness of gold equal to 1/24 part of pure gold

kelvin
 unit of temperature based on absolute zero, equal to 1 degree Celsius

kilderkin
 old unit of capacity equal to 1/2 barrel or 18 gallons

kilobase
 unit of measure of length of nucleic acid chain equal to 1000 base pairs

kip
 unit of weight equivalent to 1000 pounds

lambert
 unit of brightness of light

langley
 unit of solar radiation

league
 unit of distance of between 2.4 and 4.6 miles

link
 unit of length used by surveyors, equal to 7.92 inches

lumen
 unit of luminous flux

lux
 unit of illumination equal to one lumen per square meter

magneton
 unit of the quantized magnetic moment of a particle

maxwell
 unit of magnetic flux

mecate
 old Mexican measure of about onetenth of an acre

megadeath
 unit of fatality equal to one million deaths

mho
 unit of electrical conductance

mil
 unit of 1/1000 inch used for measuring thickness of wire

minim
 unit of liquid volume equal to 1/480 fluid ounces

mnemon
 unit of memory, largely hypothetical

mole
 unit of substance equal to number of atoms as 12 grams of carbon12

morgan
 unit of inferred distance between genes on a chromosome

morgen
 unit of land area slightly more than two acres

mutchkin
 old unit of liquid measurement equal to 3/4 of an imperial pint

nail
 old measure of two and a quarter inches

neper
 unit for expressing ratio of two currents or voltages

newton
 unit of force that accelerates 1 kilogram to 1 meter / second / second

oersted
 unit of magnetic field strength

ohm
 unit of electrical resistance of circuits

osmol
 unit of osmotic pressure

palm
 unit of length equivalent to width or length of the hand

parsec
 unit of interstellar distance equal to 3.26 lightyears

pascal
 unit of pressure equal to one newton per square meter

peck
 unit of dry measure equal to 8 quarts

pennyweight
 unit of troy weight equal to 24 grains

phon
 unit of loudness of sound as heard by listeners

photon
 unit of brightness of light as received at the retina

pica
 unit of typeface equal to about 1/6 of an inch

pipe
 unit of liquid capacity equal to two hogsheads

pitch
 unit of typeface equal to number of characters per inch

point
 unit of typeface equal to 1/72 of an inch

poise
 unit of viscosity of liquids

pole
 unit of area equal to a square rod

pottle
 unit of liquid measurement of two quarts, or onehalf gallon

poundal
 unit of force that accelerates 1 pound to 1 foot / second / second

probit
 unit of measurement of statistical probability

quad
 unit of energy equal to one quadrillion British thermal units

quarter
 unit of weight equal to 28 pounds

quintal
 unit of weight equal to 100 kilograms

quire
 unit of 24 sheets of paper

rad
 unit of absorbed dose of ionizing radiation

radian
 unit of plane angular measurement, approximately 57.3 degrees

rod
 unit of length equal to 1/320 of a mile

roentgen
 unit of xradiation or gamma radiation

rood
 old unit of land area equal to 1/4 acre

rundlet
 old liquid measure equal to about 15 gallons

rutherford
 unit of radioactive decay equal to 1 million disintegrations per second

sabin
 unit of acoustic absorption of one square foot of a perfect absorber

scruple
 unit of weight used by apothecaries equal to 1/24 of an ounce

shake
 unit of one hundred millionth of a second used to measure nuclear processes

siemens
 unit of electrical conductance equivalent to one ampere per volt

slug
 unit of gravitational mass of approximately 32.174 pounds

sone
 unit of loudness on a scale based on subjective or perceived loudness

span
 unit of distance equal to handspread or nine inches

stack
 old unit of measure for firewood equal to 108 cubic feet

stone
 unit of weight equal to 14 pounds

svedberg
 unit of time used to measure sedimentation velocity

tesla
 unit of magnetic flux density equal to one weber per square meter

tex
 unit of measurement of fineness of fibres and yarn

therblig
 unit of work for quantifying industrial operations

therm
 unit of quantity of heat equal to 100,000 British thermal units

thirdendeal
 old liquid measure of three pints; onethird of anything

tod
 old unit of weight of wool equal to 28 pounds

tog
 unit of measurement for insulation properties of fabric

ton
 unit of cooling power equal to 12,000 BTU per hour

torr
 unit of pressure equal to 1/760 of standard atmospheric pressure

tun
 unit of liquid capacity of 252 gallons

vara
 unit of linear measure of between 33 and 43 inches

verst
 unit of distance equal to approximately 2/3 of a mile

virgate
 old unit of land area usually equal to 30 acres or 1/4 hide

volt
 unit of electrical potential difference and electromotive force

watt
 unit of power equal to one joule per second

weber
 unit of magnetic flux equal to 100 million maxwells

wey
 old measure for dry goods usually equal to 40 bushels

yardland
 unit of land area equal to 30 acres

yrneh
 unit of reciprocal inductance

zolotnik
 old Russian unit of weight equal to 1/6 of an ounce
