Definition of downfolded in English:

downfolded

Pronunciation /ˈdaʊnfəʊldɪd/ /ˌdaʊnˈfəʊldɪd/

adjective

  • 1That is folded down.

  • 2Geology
    (Of strata) caused to dip so as to form a downfold or syncline; (of a basin or similar structure) in which strata have been deformed in this way.

Origin

Mid 18th century. From down- + folded.