Neologism likely a calque of Arabic رَأْس مَال (raʔs māl, literally “head of money”) or Latin capitāle.
ܪܹܝܫ ܟܸܣܦܵܐ • (rēš kispā) m (plural ܪܹ̈ܝܫܲܝ ܟܸܣܦܵܐ (rēšay kispā))