impetigo

the word 'impetigo' was borrowed directly into english from the latin noun 'impetīgō', which referred to a scabby or pustular eruption on the skin. in latin, it is derived from the verb 'impetere', meaning 'to attack or assail', a compound of 'in-' (toward, against) and 'petere' (to seek, aim at, attack). this etymological sense of an attack vividly captures the sudden onset and spreading nature of the skin condition. the term entered medical english in its latin form, retaining its specific clinical meaning for a bacterial skin infection.

this word is a direct latin loanword and is not productively segmented into meaningful sub-parts in modern english based on its current spelling.