incurvation

in·cur·vate

I0094900 (ĭn-kûr′vāt′, ĭn′kûr-)tr.v. in·cur·vat·ed, in·cur·vat·ing, in·cur·vates To cause to bend into an inward curve.adj. Curved inward.

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in′cur·va′tion n.in·cur′va·ture′ (-və-cho͝or′, -chər) n.

Thesaurus

Noun	1.	incurvation - a shape that curves or bends inwardconcave shape, concavity, incurvaturesolid - a three-dimensional shapedome - a concave shape whose distinguishing characteristic is that the concavity faces downwardfossa, pit - a concavity in a surface (especially an anatomical depression)niche, recess, recession, corner - a small concavitybowl, trough - a concave shape with an open topscoop, pocket - a hollow concave shape made by removing somethingimprint, impression, depression - a concavity in a surface produced by pressing; "he left the impression of his fingers in the soft mud"cup - any cup-shaped concavity; "bees filled the waxen cups with honey"; "he wore a jock strap with a metal cup"; "the cup of her bra"indentation, indenture - a concave cut into a surface or edge (as in a coastline)
	2.	incurvation - the action of creating a curved shapebending - the act of bending something