(Islam) The Kaaba.

(Islam) The Qur'an.

Alternative spelling of Allahu akbar

(communication theory) A graphical representation that reveals the exponential drop in frequency of communication between engineers as the distance between them increases.

A supposed illness with various symptoms caused by sensitivity to various substances in the modern environment.

An alligator of a species native to the southeastern United States, Alligator mississippiensis.

plural of alligator wrench

A kind of pipe wrench having a flaring jaw with teeth on one side.

plural of Allen curve

A school- or community-based organization intended to provide a safe and supportive environment for lesbian, gay, bisexual, transgender and queer youth, as well as their straight supporters.