Initialism of Defence Intelligence Organisation, an Australian government intelligence agency.

(chemistry) A hard glassy mineral, SiO₂, occurring as quartz, sand, opal etc. Informally known as silica.

Administrative division of the later Roman Empire, starting with the tetrarchy. / (religion) Region administered by a bishop.

A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.

(electronics) An electronic device that allows current to flow in one direction only; used chiefly as a rectifier.

(Greek mythology) The god of wine, ivy and grapes, specifically its intoxication and social influence, but also the patron of agriculture and the theater. Also related to the mystery of religion, as in "spiritual intoxication".

A three-dimensional display of a scenery, often having a painted background in front of which models are arranged, e.g. in a museum where stuffed animals are presented against a painted landscape.

An Ancient Greek male given name from Ancient Greek, notably borne by Diogenes of Sinope, an Ancient Greek philosopher (c.412-c.323 BC), the most famous of Cynic philosophers.

(inorganic chemistry) The normal oxide of carbon, CO₂; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.

(chemistry) Any oxide containing two oxygen atoms in each molecule.