IPA: /sʌbˈklɪnɪkli/
KK: /sʌbˈklɪnɪkli/
In a way that does not show obvious symptoms or signs of a disease or condition, often detected only through tests.
The patient was subclinically affected by the condition, showing no visible symptoms.
Subclinically → It is formed from "sub-" (meaning under or below) and "clinicalis" (from Latin "clinicus", meaning relating to a bed or clinical practice). The word refers to conditions that are present but not severe enough to be clinically evident or diagnosed.
Think of 'sub-' meaning 'under' and 'clinical' relating to medical practice — so subclinically refers to conditions that are under the level of clinical detection.