The HasUnit(unit) function returns true if the name is accepted as a unit name. Otherwise, false is returned.

'display'=truefalse

If this option is true and the unit unit is accepted as a valid unit name, the default spelling with context is returned instead of true. Otherwise, false is returned.

$\mathrm{with}\left(\mathrm{Units}\right)\:$

Automatically loading the Units[Simple] subpackage

$\mathrm{HasUnit}\left('\mathrm{cm}'\right)$

$\mathrm{true}$

$\mathrm{HasUnit}\left('\mathrm{mile}\left[\mathrm{US\_survey}\right]'\right)$

$\mathrm{true}$

$\mathrm{HasUnit}\left('\mathrm{\Omega }'\,'\mathrm{display}'=\mathrm{true}\right)$

${\mathrm{ohm}}_{\mathrm{SI}}$

$\mathrm{HasUnit}\left('\mathrm{\omega }'\right)$

$\mathrm{false}$