Arham is built from arhat, the worthy one, a term Jainism shares with Buddhism, where the cognate arahant names one who has destroyed the defilements, though the two traditions arrived at the term independently from the shared shramana religious culture of ancient North India rather than one borrowing it from the other. In Jain usage arhat designates specifically a tirthankara or another being who has attained omniscience while still embodied, a category with no exact Buddhist equivalent, so the shared vocabulary conceals a real doctrinal difference in what the worthy one has actually achieved. Turning arhat into the bija arham, adding the nasal ending common to seed syllable formation elsewhere in Tantric practice, appears to belong to the medieval period of Jain tantric literature, considerably later than the doctrine of the tirthankaras itself.
Transmission of the syllable runs heavily through the yantra tradition associated with the Rishimandala, a diagram or configuration of syllables and figures used in Jain contemplative practice, where arham is typically placed at the center as the seed from which the surrounding names and syllables are understood to unfold, a structural role rather than simply one invocation among equals. Jain teachers writing on the syllable have drawn out a further reading in which the letters of arham are taken to stand, one each, for the five categories of supreme beings Jains venerate in the Navkar formula recorded elsewhere in this atlas, arihanta, siddha, acharya, upadhyaya and sadhu, compressing the whole fivefold homage into a single seed, an interpretive move characteristic of how Tantric exegesis across traditions tends to fold longer formulas into shorter, denser ones rather than the reverse.