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1. A reference to two positions in the benzene ring that are adjacent.
2. Pertaining to the state in which the atomic nuclei of a diatomic molecule spin in the same direction.
3. Straight; upright; vertical.
Word Entries containing the term:
orthoaxis, ortho axis
That axis in s crystal of the monoclinic system (a crystal that has three unequal axes, with one pair not at right angles) which is perpendicular to the other axes.