Section 2(47) of the Income-tax Act, 1961 defines the term 'transfer' in relation to a capital asset. This section is crucial as it determines when a capital gain is realized and thus taxable. The definition includes a wide range of transactions such as sale, exchange, relinquishment of the asset, extinguishment of any rights therein, and compulsory acquisition under any law. It also covers transactions involving the conversion of a capital asset into stock-in-trade and the maturity or redemption of zero-coupon bonds. The significance of this section lies in its broad scope, capturing various forms of asset disposals that might otherwise escape taxation. The burden of proof typically lies with the taxpayer to demonstrate that a transaction does not constitute a 'transfer' as defined. In practice, this section ensures that capital gains tax is levied on a wide array of asset disposals, thereby preventing tax avoidance.