Where does “micropustular” come from?

micropustular (English) comes from English pustular, from English -ar, from Middle English -ar, from Old English -ere, from Proto-West Germanic -ārī, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

micropustular (English): Relating to micropustules

Definitions

  1. Relating to micropustules

Ancestry of “micropustular”, step by step

micropustular traces back through two separate lines of ancestry.

via English pustular

StepLanguageWordMeaning
1EnglishpustularOf, pertaining to, or containing pustules
2English-arOf, near, or pertaining to; Forming nouns such as...
3Middle English-ar
4Old English-eremasculine agent suffix, originally applied only...
5Proto-West Germanic-ārī-er
6Proto-Germanic-ārijaz-er
7Latin-āriuser
8Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)

via English micro

StepLanguageWordMeaning
1EnglishmicroSmall, relatively small; short form of...
2Ancient Greekμικρόςlittle, small
3Proto-Indo-Europeanmēy-soft, tender, dear
Every word from Proto-Italic *-āziosEvery word from Latin -āriusEvery word from English -ar