A type of ākāśaśreṇi (Śreṇi (1) (the row of space- units));
the path of the motion of the Jīva (soul) or the Pudgala (physical substance), with one turn. Basically all the rows of space-units are straight. They are termed curved only with respect to the change in the direction of the motion; such path is taken when the place of re-birth (of the soul or the place of destination of the Pudgala) is not in the same Śreṇi (1) but in the one which is in the same Pratara (plane) with respect to the place of death in the previous birth (or the place of departure of the Pudgala). When the Jīva or the Pudgala, while undertaking motion in the straight path, enters into other Śreṇi, it has to take one turn, and so it is called the Śreṇi with one turn; e.g.-when a Jīva or the Pudgala, departing from the east direction of the lower cosmos travels to the west direction of the upper cosmos, then in the beginning it reaches in the east direction of the upper cosmos through a straight line-i.e., it travels in the same Śreṇi, and then it takes a turn to travel in the west direction. It takes two Samayas (smallest time-units) to reach the destination.
'egao vaṃka' tti 'ekata' ekasyāṃ diśi 'vaṅkā' vakrā yayā jīvāpudgalā ṛju gatvā vakrāṃ kurvanti-śreṇyantareṇa yāntīti, sthāpanā ceyam.
(Bhaga 25.91 Vṛ Pa 468)
egaovaṃkāe seḍhīe uvavajjamāṇe dusamaieṇaṃ viggaheṇaṃ uvavajjejjā.
(Bhaga 34.3)
yadā punarmaranasthānādutpattisthanamekapratare viśreṇyāṃ varttate tadaikatovakrā śrenih syāt samayadvayena cotpattisthānaprāptiḥ syādityata ucyate.
(Bhaga 34.3 Vṛ Pa 956,957)