(geothermal energy) Initialism of Hot Dry Rock. / Initialism of Humanitarian Daily Ration. / (photography) Initialism of High Dynamic Range.

(oncology) A disease in which abnormal cells multiply without control in the bladder.

The quality of being portly

A relatively small maple (Acer circinatum), found in western North America, resembling the Japanese maple, often grown as an ornamental.