A pension fund is 'established in terms of' a published industrial council agreement for purposes of s 2(1) of the Pension Funds Act if it is established pursuant to or in accordance with such an agreement, even where the fund is not directly created by the published agreement itself but rather by the subsequent adoption of a constitution and rules. The phrase 'in terms of' bears a wide meaning encompassing funds established in pursuance of published agreements that provide for the establishment of such funds. Where statutory language is capable of two interpretations, long-standing administrative interpretation by the relevant authority (here, 40-50 years of treating such funds as exempt) is a significant consideration that may tip the balance, particularly where many rights have been acquired and obligations fulfilled on the basis of that interpretation.