Definition:Dimension (Measurement)/Fundamental Dimensions

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The SI-recommended fundamental dimensions are:

$\mathsf M$: mass
$\mathsf L$: length
$\mathsf T$: time
$\Theta$: temperature
$\mathsf I$: electric current
$\mathsf N$: amount of substance
$\mathsf J$: luminous intensity

Also defined as

Some sources prefer to use:

$\mathsf Q$: electric charge

instead of $\mathsf I$: electric current.