When used in this chapter the following words or terms shall, unless the context indicates otherwise, have the following meanings:--
The term "capital gain income" shall mean gain from the sale or exchange of a capital asset. The terms "short-term capital gain", "short-term capital loss", "long-term capital gain", "long-term capital loss", "net short-term capital gain", "net short-term capital loss", "net long-term capital gain" and "net long-term capital loss" shall have the meanings as provided in section 1222 of the Code, as amended and in effect for the taxable year. In determining the amount of gain or loss on any sale, exchange or other disposition of property, section 6F shall be taken into account and in determining the amount of long-term capital loss or short-term capital loss for any year, clause (2) of subsection (c) of section 2 shall be taken into account; provided, however, that losses from the sale or exchange of capital assets shall not include any item the deduction of which is or, but for some other section, would be prohibited by section 165(c), section 262 or section 267 of the Code.
Mass. Gen. Laws ch. 62, § 62:1