Secondary
Encyclopedia
Secondary is an adjective meaning "second" or "second hand". It may refer to:
- The group of (usually at least four) defensive backDefensive backIn American football and Canadian football, defensive backs are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of...
s in American football and Canadian football - An obsolete name for the MesozoicMesozoicThe Mesozoic era is an interval of geological time from about 250 million years ago to about 65 million years ago. It is often referred to as the age of reptiles because reptiles, namely dinosaurs, were the dominant terrestrial and marine vertebrates of the time...
in geosciences - The secondary winding, or the electrical or electronic circuit connected to the secondary winding in a transformerTransformerA transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field...
- Secondary colorSecondary colorA secondary color is a color made by mixing two primary colors in a given color space. Examples include the following:-Light : red + green = yellowgreen + blue = cyan blue +...
- Secondary consumers in ecology Trophic dynamics
- Secondary dominantSecondary dominantSecondary dominant is an analytical label for a specific harmonic device, prevalent in the tonal idiom of Western music beginning in the common practice period...
in music - Secondary educationSecondary educationSecondary education is the stage of education following primary education. Secondary education includes the final stage of compulsory education and in many countries it is entirely compulsory. The next stage of education is usually college or university...
- Secondary schoolSecondary schoolSecondary school is a term used to describe an educational institution where the final stage of schooling, known as secondary education and usually compulsory up to a specified age, takes place...
- The type of school at the secondary level of education
- Secondary school
- Secondary marketSecondary marketThe page applies to the finanical term; For the merchandising concept, see Aftermarket .The secondary market, also called aftermarket, is the financial market where previously issued securities and financial instruments such as stock, bonds, options, and futures are bought and sold....
, an aftermarket where financial assets are traded - Secondary market offeringSecondary Market OfferingA secondary market offering, according to the U.S. Financial Industry Regulatory Authority , is a registered offering of a large block of a security that has been previously issued to the public. The blocks being offered may have been held by large investors or institutions, and proceeds of the...
- Secondary mirrorSecondary mirrorA secondary mirror is the second deflecting or focusing mirror element in a reflecting telescope. Light gathered by the primary mirror is directed towards a focal point typically past the location of the secondary. Secondary mirrors in the form of an optically flat diagonal mirror are used to...
, second mirror element/focusing surface in a reflecting telescope - Secondary neoplasmSecondary neoplasmA secondary neoplasm refers to any of a class of cancerous tumors that are either metastatic offshoots of a primary tumor, or apparently unrelated tumors that increase in frequency following certain cancer treatments, including chemotherapy or radiotherapy....
- Secondaries, the second-largest group of remiges (wing feathers), which attach to the inner lower arm
- Private equity secondary, investment in an existing private equity fund or other alternative asset