the word 'valediction' is a direct borrowing from latin 'valedictiō', which is itself a compound of 'valē' (farewell) and 'dictiō' (saying). the latin root 'valēre', meaning 'to be strong or well', underpins the parting wish for good health. over time, this literal command 'be well' became formalized into a term for the act of bidding farewell. the component 'diction' consistently denotes the act or manner of speaking, thus 'valediction' logically evolved to signify the formal speech or action performed when taking one's leave.

Structure: vale (farewell) + diction (speech) vale is from latin 'valē', the imperative of 'valēre' meaning 'to be well', used as a word of farewell. diction is from latin 'dictiō', meaning 'saying' or 'speech', from 'dīcere' meaning 'to say'.