ankylosis

As nouns the difference between ankylosis and null

is that ankylosis is (anatomy) the growing together of bones to form a single unit while null is zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun ankylosis is

(anatomy) the growing together of bones to form a single unit.

As nouns the difference between ankylosis and arthrodesis

is that ankylosis is the growing together of bones to form a single unit while arthrodesis is the fusion of a joint between two or more bones so that the joint can no longer move.

As a verb ankyloses

is (ankylose).

As a noun ankylosis is

(anatomy) the growing together of bones to form a single unit.