(Canada, US) A freeway lane designated for sole use by high occupancy vehicles.

any of the diamond-shaped wave patterns that appear in the supersonic exhaust plume of an aerospace propulsion system, such as a supersonic jet engine or rocket, when it is operated in an atmosphere.

plural of diacritical hook

An ogonek (˛). / A retroflex hook (̢). / A cedilla (¸). / other similar diacritics

A form of on-demand transportation similar to public transit usually in areas or during times where fixed route service is not available or possible and resembling paratransit, taxi, or shuttle service in its execution.

(data modeling) A graphical representation of entities and their relationships to each other in a conceptual data model.

plural of Diana monkey

Cercopithecus diana, an Old World monkey found in West Africa.

(medicine) A treatment for patients with severe chronic kidney disease in which fluids are exchanged from the blood in the patient's peritoneum in the abdomen.

(astronomy) Abbreviation of Hertzsprung-Russell diagram.