flex·ure 
(flĕkshər)
(flĕkshər)n.
1. A curve, turn, or fold, such as a bend in a tubular organ: a flexure of the colon.
2. The act or an instance of bending or flexing; flexion.
flexur·al adj.
- protonotary apostolic
- proton-proton chain
- proton pump inhibitor
- proton synchrotron
- proto-oncogene
- protopathic
- protopathy
- protoplanet
- protoplanetary disk
- protoplasm
- protoplasmal
- protoplasmatic
- protoplasmic
- protoplast
- protoplastic
- protoporphyrin
- protostar
- protostele
- protostelic
- protostome
- prototroph
- prototrophic
- prototrophy
- prototypal
- prototype