Section 2(1)(h) in The Terrorist Affected Areas (Special Courts) Act, 1984
(h)“terrorist” means a person who indulges in wanton killing of persons or in violence or in the disruption of services or means of communications essential to the community or in damaging property with a view to—(i)putting the public or any section of the public in fear;(ii)affecting adversely the harmony between different religious, racial, language or regional groups or castes or communities; or(iii)coercing or overawing the Government established by law; or(iv)endangering the sovereignty and integrity of India;