(ornithology) Any flight feather attached to the ulna (forearm) of a bird.

Next in order to the first or primary; of second place in origin, rank, etc. / Originating from a deputy or delegated person or body

The state of being secondary.

plural of secondary

plural of secondary amine

The production of carbon dioxide in sparkling wine using the méthode champenoise, or in beer using bottle conditioning / Malolactic fermentation.

(economics) An industry that processes raw materials produced by primary industry into goods suitable for tertiary industry to provide goods or services to consumers.

Energy contained in a fuel, electricity, or similar carrier of energy derived from some a primary energy source.

Hypothermia caused by an underlying pathology that prevents the body from generating enough core heat.

(chemistry) Any alcohol of general formula R₂CH-OH