Words ending in -ica: de or het?
usually de
Words ending in -ica almost always take de: de logica (logic), de grammatica (grammar), de fysica (physics).
In our database, 167 of the 169 words (98.8%) with this ending take de.
Examples
logica | kwantummechanica | mondharmonica | grammatica | fysica | erica | ethica | optica | tonica | tunica | topica | botica | critica | erotica | mystica