One of the major branches of Christianity; it comprises the Greek Orthodox Church, the Russian Orthodox Church and other patriarchates. / Any other Church that self-designates as Eastern and Orthodox

(inorganic chemistry) Any binary compound of chlorine and oxygen.

Alternative spelling of three-on-the-tree

(idiomatic) In a state of suspense or apprehension.

Cooked ears of corn (maize, specifically sweet corn).

Any change of a substance from one physical state (solid, liquid or gas) to another

(idiomatic) A brief answer or opinion. / Used other than figuratively or idiomatically: see answer, on, a, postcard.

(inorganic chemistry, chiefly Britain) Alternative spelling of sulfite of soda

The peak of the Earth's oil production.

sodium bicarbonate