Pronunciation spelling of awful.

(medicine) Initialism of oral rehydration solution.

bog iron ore

(dated) Spoken in a eloquent, clear, and confident manner.

(dated or historical) The practice of speaking ore rotundo.

(dated, of a speech) Delivered ore rotundo.

Any treatment of an ore used to concentrate its valuable constituents (minerals) into products (concentrate) of smaller bulk, and simultaneously to collect the worthless material (gangue) into discardable waste (tailings).

(geology) any rock containing commercially interesting amounts of copper

any ore containing elemental sulfur, or a sulfide from which it may be obtained

Alternative spelling of sulfur ore