portrait: [16] Portrait was borrowed from French portrait, which originated as the past participle of the verb portraire ‘depict’ (source of English portray [14]). This was descended from Latin prōtrahere, a compound verb formed from the prefix prō- ‘forth’ and trahere ‘draw’ (source of English tractor). This originally meant ‘draw out, reveal’, and also ‘lengthen’ (it has given English protract [16]), but in medieval Latin it came to be used for ‘depict’. => portray, protract, tractor[portrait etymology, portrait origin, 英语词源]