IPA: /ˌmɪlɪˈhɛnri/
KK: /mɪlɪˈhɛnri/
A unit of measurement for inductance that is one thousandth of a henry.
The circuit requires a millihenry of inductance to function properly.
Millihenry → It is formed from "milli-" (meaning one thousandth) and "henry" (named after the American inventor Joseph Henry, representing the unit of inductance). The word "millihenry" refers to one thousandth of a henry, a unit of measurement in electrical inductance.
Think of 'milli-' meaning one thousandth, and remember that a millihenry is a very small unit of inductance, specifically one thousandth of a henry.
No commonly confused words.