Meaning of -ERY in English

-ERY

-ery BrE AmE ə r i —This stress-neutral suffix is used only after a strong-vowelled syllable (ma ˈ chinery); after a weak-vowelled syllable the variant -ry ri is used instead ( ˈ dentistry).

Longman Pronunciation English Dictionary.      Английский словарь произношений Longman.