pentabromodiphenyl ether

(chemistry) An α,β-unsaturated ketone, a colourless volatile liquid with a strong peppermint odour.

(historical) A group of clerical Oxford dons that tried to link the Anglican Church more closely to its Roman Catholic roots.

A particular kind of anti-inflammatory drug that is used to treat osteoarthritis.

The calculated amount of oxygen which would be required to fully oxidize an organic compound

(inorganic chemistry) A colorless amorphous powder; a red or brown colored crystal.

(chemistry) A black solid with an ionic structure made by heating copper in air.

(pharmacology) A narrow-spectrum beta-lactam antibiotic made by chemical modification of penicillin and administered in the form of its hydrated sodium salt C₁₉H₁₈N₃NaO₅S·H₂O to treat infections caused by penicillin-resistant staphylococci.

(organic chemistry) Describing any heterocycle having one or more oxygen atoms in the ring

A call in a children's game to say that players in hiding are free to come out.