1. next after the first in order, place, time, etc.
2. belonging or pertaining to a second order, division, stage, period, rank, grade, etc.
3. dependent on or generated by something more basic; derivative.
4. (in scholarly studies) pertaining to or being a derived or derivative account, an evaluation of original data, etc.; not primary or original, as in secondary source; secondary research.
5. of minor or lesser importance; subordinate; auxiliary.
6. of or relating to secondary schools.
7. Chemistry.
• involving or obtained by the replacement of two atoms or groups.
• noting or containing a carbon atom united to two other carbon atoms in a chain or ring molecule.
8. noting or pertaining to the current induced by a primary winding or to the winding in which the current is induced in an induction coil, transformer, or the like.
9. noting or pertaining to a mineral produced from another mineral by decay, alteration, or the like.
10. Grammar.
• (of a derivative) having a root or other unanalyzable element that is itself a word or free form: The word “glazier” is a secondary derivative formed by adding a suffix to “glaze.” The word "debatably" is formed directly from "debatable" and is therefore a secondary derivative from "debate."
• having reference to past time; noting or pertaining to a past tense: the Latin, Greek, or Sanskrit secondary tenses.
11. pertaining to any of a set of flight feathers on the second segment of a bird's wing.
12. of, relating to, or characteristic of a secondary accent: secondary stress.

13. a person or thing that is secondary.
14. a subordinate, assistant, deputy, or agent.
15. a winding in a transformer or the like in which a current is induced by a primary winding.
16. a secondary feather.
17. the defensive unit that lines up behind the linemen.
18. secondary accent.

1. one grade or step after the first; not primary
2. derived from or depending on what is primary, original, or first
3. below the first in rank, importance, etc; not of major importance
4. of or relating to the education of young people between the ages of 11 and 18
5. (of the flight feathers of a bird's wing) growing from the ulna
• being the part of an electric circuit, such as a transformer or induction coil, in which a current is induced by a changing current in a neighbouring coil
• (of a current) flowing in such a circuit
7. (of an industry) involving the manufacture of goods from raw materials
8. (of minerals) formed by the alteration of pre-existing minerals
9. chem
• (of an organic compound) having a functional group attached to a carbon atom that is attached to one hydrogen atom and two other groups
• (of an amine) having only two organic groups attached to a nitrogen atom; containing the group NH
• (of a salt) derived from a tribasic acid by replacement of two acidic hydrogen atoms with metal atoms or electropositive groups
10. linguistics
• derived from a word that is itself a derivation from another word. Thus, lovably comes from lovable and is a secondary derivative from love
• (of a tense in Latin, Greek, or Sanskrit) another word for historic (def. 3)

11. a person or thing that is secondary
12. a subordinate, deputy, or inferior
13. a secondary coil, winding, inductance, or current in an electric circuit
14. any of the flight feathers that grow from the ulna of a bird's wing
15. a celestial body that orbits around a specified primary body
16. a cancerous growth in some part of the body away from the site of the original tumour
17. American football
• cornerbacks and safeties collectively
• their area in the field
18. short for secondary colour

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• INCUMBENT ON (noun) Definition, Meaning & Examples
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