IPA: /sʌbˈsaɪəns/
KK: /sʌbˈsaɪəns/
A field of study that is a smaller part of a larger scientific area.
Biochemistry is a subscience that focuses on the chemical processes within living organisms.
Subscience → It is formed from "sub-" (meaning under or below) and "science" (from Latin "scientia", meaning knowledge). The word refers to a field of knowledge that is considered to be beneath or a subdivision of a larger scientific discipline.
Think of 'sub-' meaning 'under' and 'science' meaning 'knowledge' — this helps you remember that 'subscience' refers to a branch of knowledge that is under a broader scientific category.