Pronunciation: (dō-mān'), [key]
1. a field of action, thought, influence, etc.: the domain of science.
2. the territory governed by a single ruler or government; realm.
3. a realm or range of personal knowledge, responsibility, etc.
4. a region characterized by a specific feature, type of growth or wildlife, etc.: We entered the domain of the pine trees.
5. to which there is superior title and absolute ownership.
6. Math.
a. the set of values assigned to the independent variables of a function.
b. region (def. 11a).
7. of many regions of magnetic polarity within a ferromagnetic body, each consisting of a number of atoms having a common polarity, and collectively determining the magnetic properties of the body by their arrangement.
8. Crystall.a connected region with uniform polarization in a twinned ferroelectric crystal.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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