'non-lacteal' originates from Latin, specifically the prefix 'non-' meaning 'not' and 'lacteal' from 'lacteus,' meaning 'of milk.'

'lacteal' transformed from the Latin word 'lacteus' and eventually became the modern English word 'lacteal.' The prefix 'non-' was added to form 'non-lacteal.'

Initially, 'lacteal' meant 'of milk,' and with the prefix 'non-,' it evolved to mean 'not of milk.'