neutral

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Not aligned with, supporting, or favoring either side in a war, dispute, or contest.
2. adj. Belonging to neither side in a controversy: on neutral ground.
3. adj. Belonging to neither kind; not one thing or the other.
4. adj. Sexless; neuter.
5. adj. Chemistry Of or relating to a solution or compound that is neither acidic nor alkaline.
6. adj. Chemistry Of or relating to a compound that does not ionize in solution.
7. adj. Physics Of or relating to a particle, an object, or a system that has neither positive nor negative electric charge.
8. adj. Physics Of or relating to a particle, object, or system that has a net electric charge of zero.
9. adj. Of or indicating a color, such as gray, black, or white, that lacks hue; achromatic.
10. adj. Linguistics Pronounced with the tongue in a middle position, neither high nor low, as the a in around.
11. n. A nation nonaligned with either side in a war.
12. n. A citizen of such a nation.
13. n. One who takes no side in a controversy: "I am by disposition one of life's neutrals, a human Switzerland” ( John Gregory Dunne).
14. n. A neutral hue.
15. n. A position in which a set of gears is disengaged so that power cannot be transmitted.

Century Dictionary and Cyclopedia

1. In the condition of one who refrains from taking sides in a contest or dispute; taking no active part with either of two contestants or belligerents; not engaged on or interfering with either side.
2. Belonging to a neutral state: as, neutral ships; a neutral flag.
3. Neither one thing nor the other; intermediate; indifferent; mediocre.
4. In chem., exhibiting neither acid nor alkaline qualities: as, neutral salts.
5. In botany, sexless; having neither stamens nor pistils, as the ray-flowers of many Composite, the marginal flowers of Hydrangea, and the upper florets of many grasses. See cut under Hydrangea.
6. In electricity and magnetism, not electrified; not magnetized.
7. In color, of low chroma; without positive quality of color; grayish.
8. n. A person, party, or nation that takes no part in a contest between others; one who or that which occupies a neutral or indifferent position.
9. In metallurgy:
10. Neither acid nor basic: said of slag and linings.
11. Neither red-short nor cold-short: said of wrought-iron.
12. Suitable for production of neutral iron: said of iron-ore.
13. See zone.
14. n. Specifically, in some United States colleges and universities, one who belongs to none of the Greek-letter or other secret societies.
15. n. In electricity, the neutral conductor of a three-wire circuit.

Wiktionary

1. adj. Not taking sides in a conflict such as war; nonaligned.
2. adj. Favouring neither the supporting nor opposing viewpoint of a topic of debate; unbiased.
3. adj. grammar Neither positive nor negative.
4. adj. Neither beneficial nor harmful.
5. adj. Having no sex; neuter.
6. adj. Having no obvious colour; gray
7. adj. physics Neither positive nor negative; possessing no charge or equivalent positive and negative charge such that there is no imbalance.
8. adj. chemistry Having a pH of 7, neither acidic nor alkaline.
9. n. A nonaligned state, or a member of such a state.
10. n. A person who takes no side in a dispute.
11. n. An individual or entity serving as an arbitrator or adjudicator (jargon / legal).
12. n. A neutral hue.
13. n. The position of a set of gears in which power cannot be transmitted to the drive mechanism.
14. n. An electrical terminal or conductor which has zero or close to zero voltage with respect to the ground.

GNU Webster's 1913

1. adj. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent.
2. adj. Neither good nor bad; of medium quality; middling; not decided or pronounced.
3. adj. (Biol.) Neuter. See Neuter, a., 3.
4. adj. (Chem.) Having neither acid nor basic properties; unable to turn red litmus blue or blue litmus red; -- said of certain salts or other compounds. Contrasted with acid, and alkaline.
5. n. A person or a nation that takes no part in a contest between others; one who is neutral.

WordNet 3.0

1. adj. having no net electric charge
2. adj. having only a limited ability to react chemically; chemically inactive
3. adj. not supporting or favoring either side in a war, dispute, or contest
4. adj. having no personal preference
5. adj. having no hue
6. adj. lacking distinguishing quality or characteristics
7. adj. possessing no distinctive quality or characteristics
8. n. one who does not side with any party in a war or dispute