hingement means the connection between the two halves of a bivalve's shell. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
From hinge + -ment.
noun
- The connection between the two halves of a bivalve's shell.“According to Scott (1961, p. Q84), the hingement of the Kirkbyacea resembles that found in the Kloedenellacea, suggesting a possible relationship between these superfamilies.”