一いっ般ぱん相そう対たい論ろん

• 一いっ般ぱん相そう対たい性せい理り論ろん

  Full, formal term for the general theory of relativity; 一般相対論 is the common abbreviation.

• 特とく殊しゅ相そう対たい論ろん

  Abbreviation for special theory of relativity, which deals with inertial frames and does not include gravity.

Abbreviation of 一般相対性理論 (ippan sōtaisei riron), itself a calque from German 'allgemeine Relativitätstheorie' or English 'general theory of relativity'.