Abortion means / involves deliberate (wilful) termination of human pregnancy by removing the foetus (or embryo) from the uterus before it has reached the stage of viability, typically before 20 weeks from the day of conception.
In India, any woman who is 18 years or older (considered an ‘adult’ legally) can abort her pregnancy at her will before 24 weeks. Abortion can be done after 24 weeks of normal pregnancy but that would require legal approval from court and a couple of doctors. If you are an adult, you need no one else’s consent to terminate your pregnancy. Most often, medical termination of pregnancy is performed as an outpatient procedure unless surgical procedure is required.