'dairy-laden' originates from the combination of 'dairy' and 'laden', where 'dairy' refers to products made from milk and 'laden' means heavily loaded or filled.

The term 'laden' comes from Old English 'hladen', meaning to load or burden, and 'dairy' from Middle English 'deyerie', referring to a place where milk is kept.

Initially, 'laden' meant 'to load', but in combination with 'dairy', it evolved to mean 'filled with dairy products'.