Dictionary Definition :
Definition[1]
:
The five are the 五大 five elements, to which the sixth 大 is added, i. e. the six elements, earth, water, fire, air and space, and 識 intelligence or mind.
Source
:
A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous
Definition[2]
:
(名數)五輪者五大之異名。五大加識大為六大。
Source
:
丁福保《佛學大辭典》