\begin{longtable}{Xl>{\ttfamily\textbackslash}Xl} \caption{predefined units}\\ \toprule \emph{name} &\emph{sign} &\multicolumn{1}{X}{\emph{macro}}&\emph{alias}\\ \midrule \endfirsthead \caption{predefined units}\\ \toprule \emph{name} &\emph{sign} &\multicolumn{1}{X}{\emph{macro}}&\emph{alias}\\ \midrule \endhead \bottomrule \endfoot \multicolumn{4}{l}{\emph{base units}}\\[.5ex] meter &\unitsignonly{\meter} &meter & \\ kilogram &\unitsignonly{\kilogram} &kilogram &\cmd{\kg} \\ mole &\unitsignonly{\mole} &mole & \\ second &\unitsignonly{\second} &second&\cmd{\sek}\\ ampere &\unitsignonly{\ampere} &ere&\\ kelvin &\unitsignonly{\kelvin} &kelvin&\\ candela &\unitsignonly{\candela} &candela&\\[1ex] \multicolumn{4}{l}{\emph{units of length}}\\[.5ex] picometer &\unitsignonly{\picometer} &picometer&\cmd{\picom}\\ nanometer &\unitsignonly{\nanometer} &nanometer&\cmd{\nm}\\ micrometer &\unitsignonly{\micrometer} µmeter&\cmd{\micm}\\ millimeter &\unitsignonly{\millimeter} &millimeter&\cmd{\mm}\\ centimeter &\unitsignonly{\centimeter} ¢imeter&\cmd{\cm}\\ decimeter &\unitsignonly{\decimeter} &decimeter&\cmd{\dm}\\ kilometer &\unitsignonly{\kilometer} &kilometer&\cmd{\km}\\[1ex] \multicolumn{4}{l}{\emph{units of weight}}\\[.5ex] gram &\unitsignonly{\gram} &gram & \\ femtogram &\unitsignonly{\femtogram} &femtogram&\cmd{\fg}\\ picogram &\unitsignonly{\picogram} &picoram&\cmd{\pg}\\ nanogram &\unitsignonly{\nanogram} &nanogram&\cmd{\nanog}\\ microgram &\unitsignonly{\microgram} µgram&\cmd{\micg}\\ milligram &\unitsignonly{\milligram} &milligram&\cmd{\mg}\\[1ex] \multicolumn{4}{l}{\emph{units of amount of substance}}\\[.5ex] femtomole &\unitsignonly{\femtomole} &femtomole&\cmd{\fmol}\\ picomole &\unitsignonly{\picomole} &picomole&\cmd{\pmol}\\ nanomole &\unitsignonly{\nanomole} &nanomole&\cmd{\nmol}\\ micromole &\unitsignonly{\micromole} µmole&\cmd{\micmol}\\ millimole &\unitsignonly{\millimole} &millimole&\cmd{\mmol}\\[1ex] \multicolumn{4}{l}{\emph{units of time}}\\[.5ex] attosecond &\unitsignonly{\attosecond} &attosecond&\\ femtosecond &\unitsignonly{\femtosecond} &femtosecond&\cmd{\fs}\\ pikosecond &\unitsignonly{\picosecond} &picosecond&\cmd{\ps}\\ nanosecond &\unitsignonly{\nanosecond} &nanosecond&\cmd{\ns}\\ microsecond &\unitsignonly{\microsecond} µsecond&\cmd{\mics}\\ millisecond &\unitsignonly{\millisecond} &millisecond&\cmd{\ms}\\[1ex] \multicolumn{4}{l}{\emph{units of amperage}}\\[.5ex] picoampere &\unitsignonly{\picoampere} &picoampere&\cmd{\pA}\\ nanoampere &\unitsignonly{\nanoampere} &nanoampere&\cmd{\nA}\\ microampere &\unitsignonly{\microampere} µampere&\cmd{\micA}\\ milliampere &\unitsignonly{\milliampere} &milliampere&\cmd{\mA}\\ kiloampere &\unitsignonly{\kiloampere} &kiloampere&\cmd{\kA}\\[1ex] \multicolumn{4}{l}{\emph{units of volume}}\\[.5ex] liter &\unitsignonly{\liter} &liter&\\ femtoliter &\unitsignonly{\femtoliter} &femtoliter&\cmd{\fl}\\ picoliter &\unitsignonly{\picoliter} &picoliter&\cmd{\pl}\\ nanoliter &\unitsignonly{\nanoliter} &nanoliter&\cmd{\nl}\\ microliter &\unitsignonly{\microliter} µliter&\cmd{\micl}\\ milliliter &\unitsignonly{\milliliter} &milliliter&\cmd{\ml}\\ centiliter &\unitsignonly{\centiliter} ¢iliter&\cmd{\cl}\\ deciliter &\unitsignonly{\deciliter} &deciliter&\cmd{\dl}\\ hectoliter &\unitsignonly{\hectoliter} &hectoliter&\cmd{\hl}\\ cubicmeter &\unitsignonly{\cubicmeter} &cubicmeter&\\ cubicmicrometer &\unitsignonly{\cubicmicrometer} &cubicmicrometer&\\ cubicmillimeter &\unitsignonly{\cubicmillimeter} &cubicmillimeter&\\[1ex] \multicolumn{4}{l}{\emph{units of area}}\\[.5ex] squaremeter &\unitsignonly{\squaremeter} &squaremeter&\\ ar &\unitsignonly{\ar} &ar&\\ Hektar &\unitsignonly{\hektar} &hektar&\\ squarecentimeter &\unitsignonly{\squarecentimeter} &squarecentimeter&\\ squaremillimeter &\unitsignonly{\squaremillimeter} &squaremillimeter&\\ squarekilometer &\unitsignonly{\squarekilometer} &squarekilometer&\\[1ex] \multicolumn{4}{l}{\emph{more units of weight}}\\[.5ex] ton &\unitsignonly{\ton} &ton&\\[1ex] \multicolumn{4}{l}{\emph{derived units of electricity}}\\[.5ex] volt &\unitsignonly{\volt} &volt&\\ millivolt &\unitsignonly{\millivolt} &millivolt&\cmd{\mV}\\ kilovolt &\unitsignonly{\kilovolt} &kilovolt&\cmd{\kv}\\ Watt &\unitsignonly{\watt} &watt&\\ milliwatt &\unitsignonly{\milliwatt} &milliwatt&\\ kilowatt &\unitsignonly{\kilowatt} &kilowatt&\\ megawatt &\unitsignonly{\megawatt} &megawatt&\\ coulomb &\unitsignonly{\coulomb} &coulomb&\\ ohm &\unitsignonly{\ohm}&ohm \textrm{or} \cmd{\Ohm}&\\ kiloohm &\unitsignonly{\kiloohm} &kiloohm&\\ megaohm &\unitsignonly{\megaohm} &megaohm&\\ gigaohm &\unitsignonly{\gigaohm} &gigaohm&\\ siemens &\unitsignonly{\siemens} &siemens&\\ millisiemens &\unitsignonly{\millisiemens} &millisiemens&\\ farad &\unitsignonly{\farad} &farad&\\ femtofarad &\unitsignonly{\femtofarad} &femtofarad&\\ picofarad &\unitsignonly{\picofarad} &picofarad&\\ nanofarad &\unitsignonly{\nanofarad} &nanofarad&\\ microfarad &\unitsignonly{\microfarad} µfarad&\\ millifarad &\unitsignonly{\millifarad} &millifarad&\\[1ex] \multicolumn{4}{l}{\emph{units of energy}}\\[.5ex] joule &\unitsignonly{\joule} &joule&\\ millijoule &\unitsignonly{\millijoule} &millijoule&\\ kilojoule &\unitsignonly{\kilojoule} &kilojoule&\cmd{\kJ}\\ megajoule &\unitsignonly{\megajoule} &megajoule&\\ calorie &\unitsignonly{\calory} &calory&\\ kilocalorie &\unitsignonly{\kilocalory} &kilocalory&\\ electronvolt &\unitsignonly{\electronvolt} &electronvolt&\cmd{\eV}\\ millielectronvolt&\unitsignonly{\millielectronvolt}&millielectronvolt&\cmd{\meV}\\ kiloelectronvolt &\unitsignonly{\kiloelectronvolt} &kiloelectronvolt&\cmd{\keV}\\ megaelectronvolt &\unitsignonly{\megaelectronvolt} &megaelectronvolt&\cmd{\MeV}\\ gigaelectronvolt &\unitsignonly{\gigaelectronvolt} &gigaelectronvolt&\cmd{\GeV}\\ teraelectronvolt &\unitsignonly{\teraelectronvolt} &teraelectronvolt&\cmd{\TeV}\\ \multicolumn{4}{l}{\emph{more units of time}}\\[.5ex] minute &\unitsignonly{\minute} &minute&\\ hour &\unitsignonly{\hour} &hour&\\ days &\unitsignonly{\days} &days&\\[1ex] \multicolumn{4}{l}{\emph{units of temperature}}\\[.5ex] degree Celsius &\unitsignonly{\celsius} &celsius \textrm{or} \cmd{\Celsius}&\\[1ex] \multicolumn{4}{l}{\emph{units of angle}}\\[.5ex] radian &\unitsignonly{\radian} &radian&\\ steradian &\unitsignonly{\steradian} &steradian&\\ degree &\unitsignonly{\degree} °ree \textrm{or} \cmd{\Degree}&\\ arc minute &\unitsignonly{\arcmin} &arcmin&\\ arc second &\unitsignonly{\arcsec} &arcsec&\\[1ex] \multicolumn{4}{l}{\emph{units of frequencies}}\\[.5ex] hertz &\unitsignonly{\hertz} &hertz&\\ kilohertz &\unitsignonly{\kilohertz} &kilohertz&\cmd{\kHz}\\ megahertz &\unitsignonly{\megahertz} &megahertz&\cmd{\MHz}\\ gigahertz &\unitsignonly{\gigahertz} &gigahertz&\cmd{\GHz}\\[1ex] \multicolumn{4}{l}{\emph{units of force}}\\[.5ex] newton &\unitsignonly{\newton} &newton&\\ millinewton &\unitsignonly{\millinewton} &millinewton&\\ kilonewton &\unitsignonly{\kilonewton} &kilonewton&\\[1ex] \multicolumn{4}{l}{\emph{units of pressure}}\\[.5ex] pascal &\unitsignonly{\pascal} &pascal&\\ hectopascal &\unitsignonly{\hectopascal} &hectopascal&\\ bar &\unitsignonly{\uBar} &uBar&\\ millibar &\unitsignonly{\millibar} &millibar&\\[1ex] \multicolumn{4}{l}{\emph{units of magnetism}}\\[.5ex] weber &\unitsignonly{\weber} &weber&\\ tesla &\unitsignonly{\tesla} &tesla&\\ henry &\unitsignonly{\henry} &henry&\\[1ex] \multicolumn{4}{l}{\emph{units of light}}\\[.5ex] lumen &\unitsignonly{\lumen} &lumen&\\ lux &\unitsignonly{\lux} &lux&\\[1ex] \multicolumn{4}{l}{\emph{units of radioactivity}}\\[.5ex] becquerel &\unitsignonly{\becquerel} &becquerel&\\ megabecquerel &\unitsignonly{\megabecquerel} &megabecquerel&\\ curie &\unitsignonly{\curie} &curie&\\ sievert &\unitsignonly{\sievert} &sievert&\\ millisievert &\unitsignonly{\millisievert} &millisievert&\\ \multicolumn{4}{l}{\emph{percent}}\\[.5ex] percent &\unitsignonly{\percent} &percent& \end{longtable}