2. (Anat.)

Defn: Open or spongy, as some porous bones.

CANCELLATION
Can`cel*la"tion, n. Etym: [L. cancellatio: cf. F. cancellation.]

1. The act, process, or result of canceling; as, the cansellation of certain words in a contract, or of the contract itself.

2. (Math.)

Defn: The operation of striking out common factora, in both the dividend and divisor.

CANCELLI
Can*cel"li, n. pl. Etym: [L., a lattice. See Cancel, v. t.]

1. An interwoven or latticed wall or inclosure; latticework, rails, or crossbars, as around the bar of a court of justice, between the chancel and the have of a church, or in a window.

2. (Anat.)

Defn: The interlacing osseous plates constituting the elastic porous tissue of certain parts of the bones, esp. in their articular extremities.