(roofing) A cleat designed to accommodate thermal movement of metal roof panels.

plural of expansion turbine

turboexpander

(physics) The cooling of a gas as it undergoes adiabatic expansion

plural of expansion pack

(computing) A module that adds new content to an existing piece of software. / (video games, by extension) An add-on for a video game that includes additional content and is typically sold separately.

plural of expansion slot

(computing) A slot for additional hardware, cards, etc. for the purpose of expanding a computer system.

Synonym of Laplace expansion

(mathematics) An expression for the determinant |B| of an n × n matrix B that is a weighted sum of the determinants of n submatrices (or minors) of B, each of size (n − 1) × (n − 1).