'mid-morning' originates from the combination of 'mid-' meaning 'middle' and 'morning,' which comes from Old English 'morgen,' meaning 'morning.'

'morgen' transformed into the Middle English word 'morning,' and eventually became the modern English word 'morning.'

Initially, 'morning' referred to the time from sunrise to noon, but 'mid-morning' specifically evolved to denote the middle part of this period.