concavefold

noun
UK /ˈkɒnkeɪvfəʊld/
US /ˈkɑːnkeɪvfoʊld/

A concavefold is a fold that curves inward like the inside of a bowl.

She made a concavefold in the paper so it could hold the little seeds.


OTHER MEANINGS

2. A valley fold in origami that bends the paper toward you.

The instructions said to make a concavefold along the dotted line.

3. A geological bend where rock layers dip downward in the middle.

The hikers walked through a concavefold in the hillside.

4. A curved tuck sewn into fabric to shape it inward.

The tailor added a concavefold at the waist of the dress.