IPA: /ˌʌltrəˈmɪnəˌtʃʊr/
KK: /ˌʌltrəˌmɪnɪˈtʃʊr/
Extremely small in size, often used to describe objects that are much smaller than usual.
The artist created an ultraminiature sculpture that could fit on a pencil tip.
Ultraminiature → It is formed from "ultra-" (meaning beyond) and "miniature" (from Latin "minutus", meaning small). The word "ultraminiature" refers to something that is extremely or exceptionally small, going beyond the usual small size.
Think of 'beyond' ('ultra-') and 'small' ('miniature') to remember that 'ultraminiature' means something that is exceptionally small.
No commonly confused words.