'aspergillales' originates from New Latin, formed from the genus name 'Aspergillus' plus the taxonomic suffix '-ales' (denoting an order); the genus name 'Aspergillus' ultimately derives from Latin 'aspergillum' meaning 'holy water sprinkler'.

'aspergillales' developed as a modern scientific name by adding the standard order-ending '-ales' to the existing genus name 'Aspergillus'; 'Aspergillus' itself was coined in the 18th century from Latin 'aspergillum', and the order name was later established in mycological classification.

Initially 'aspergillum' meant 'holy water sprinkler' in Latin; the term was adopted as the genus name 'Aspergillus' (for fungi whose conidiophores resembled a sprinkler) and later extended into the order name 'aspergillales' to denote the group of related fungi.