plural of block design

(mathematics) In combinatorial mathematics, a set together with a family of subsets (repeated subsets are allowed at times) whose members are chosen to satisfy some set of properties deemed useful for a particular application.

Alternative spelling of wood block

(archaic) Yule log (large log traditionally burned on Christmas Eve)

(Australia, New Zealand) A building at a park, campground, caravan park, or holiday park containing multiple facilities for use by patrons such as toilets, showers, kitchen, laundry, or lockers.

(psychiatry) The phenomenon, in schizophrenia and other psychiatric disorders, where a person's speech is suddenly interrupted by silences.

plural of block captain

One of the residents of a housing block, elected to represent the community.

(cryptography) Any deterministic cipher that operates on fixed-size groups of bits (binary digits), called blocks, with an unvarying transformation specified by a symmetric key.

plural of block cipher