IPA: /ˌʌltrəprɪˈsaɪs/
KK: /ˌʌltrəprɪˈsaɪs/
Very accurate and exact, leaving no room for error.
The scientist used an ultraprecise instrument to measure the tiny particles.
Ultraprecise → It is formed from "ultra-" (meaning beyond) and "precisus" (from Latin, meaning cut off or precise). The word "ultraprecise" means beyond precise, indicating an extreme level of accuracy.
Think of going 'beyond' ('ultra-') what is 'cut off' or 'exact' ('precisus') — that's why ultraprecise means extremely accurate.
No commonly confused words.