Rūpakhandha

Abhidhammapiṭaka · Vibhaṅga · Vol. 35 · Section 37

[37] The form aggregate (rūpakkhandha) as fivefold: the earth element (paṭhavī-dhātu), the water element (āpo-dhātu), the fire element (tejo-dhātu), the wind element (vāyo-dhātu), and whatever form is derived (upādā). Thus the form aggregate is fivefold.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.